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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| 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 | 6,747 BBLs | 1,112 MCF | Apr 2017 - Feb 2026 |
| 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 - Feb 2026 |
| 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 | 1,926 BBLs | 0 MCF | Dec 2022 - Feb 2026 |
| Smokey Gap Oil Company LLC | Wyoming | 238 BBLs | 0 MCF | Apr 2025 - Jan 2026 |
| 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 | 9,470 BBLs | 2,970 MCF | Dec 2012 - Jan 2026 |
| Snyder Oil Corporation | Wyoming | 0 BBLs | 0 MCF | Nov 1981 - Dec 1999 |
| Sois-Osage Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1996 - Oct 2006 |
| Solar Petroleum Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1980 - Dec 1980 |
| Sonat Exploration Co | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Oct 2000 |
| Sonoma Energy Corporation | Wyoming | 0 BBLs | 0 MCF | Dec 2000 - Feb 2010 |
| Sonterra Energy LLC | Wyoming | 0 BBLs | 0 MCF | Nov 1996 - Mar 2022 |
| Sooner Operating Co Inc | Wyoming | 0 BBLs | 0 MCF | Jun 2007 - Feb 2026 |
| Sourcegas Energy Services Co | Wyoming | 0 BBLs | 0 MCF | Feb 2009 - Jun 2015 |
| South Coast Oil Corporation | Wyoming | 0 BBLs | 0 MCF | Mar 1987 - Dec 1993 |
| South Pass Petroleum Inc | Wyoming | 230 BBLs | 14,160 MCF | Sep 2018 - Jan 2026 |
| Southern Mineral Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Sep 1995 |
| Southern Oil LLC | Wyoming | 0 BBLs | 0 MCF | Aug 2013 - Jan 2017 |
| Southern States Petroleum Corp | Wyoming | 0 BBLs | 0 MCF | Mar 1981 - Dec 1982 |
| Southern Union Exploration | Wyoming | 0 BBLs | 0 MCF | Feb 1985 - Jan 1990 |
| Southland Royalty Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1995 |
| Southland Royalty Company LLC | Wyoming | 0 BBLs | 0 MCF | Jul 2016 - Jul 2021 |
| Southport Exploration Inc | Wyoming | 0 BBLs | 0 MCF | Jul 1981 - Jan 1986 |
| Southwest Drilling Inc | Wyoming | 0 BBLs | 0 MCF | Sep 1983 - Jan 1992 |
| Southwestern Energy Prod Co | Wyoming | 0 BBLs | 0 MCF | Jan 1985 - Jul 1991 |
| Southwestern Production Corporation | Wyoming | 20,015 BBLs | 71,258 MCF | Jun 1999 - Feb 2026 |