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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Saxon Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Oct 1984 |
| Sayer Bill | Wyoming | 0 BBLs | 0 MCF | Jan 1980 - Dec 1988 |
| Sayers Operating Company | Wyoming | 0 BBLs | 0 MCF | Sep 1987 - Mar 1999 |
| Scana Petroleum Resources Inc | Wyoming | 0 BBLs | 0 MCF | Aug 1993 - May 1996 |
| Scarlett Energy Enterprises LLC | Wyoming | 0 BBLs | 0 MCF | Aug 2002 - Oct 2014 |
| Sceptre Resources Inc | Wyoming | 0 BBLs | 0 MCF | May 1982 - Dec 2007 |
| Schiff & Jackson Oil Producers | Wyoming | 0 BBLs | 0 MCF | Jan 1981 - Dec 1989 |
| Schlaikjer A L | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Feb 1997 |
| Schmid Development LLC | Wyoming | 0 BBLs | 0 MCF | Nov 1997 - Dec 2010 |
| Schmid Properties Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1990 - Jul 1994 |
| Schneider Oil Corporation | Wyoming | 0 BBLs | 0 MCF | Aug 1990 - Aug 2009 |
| Schuricht Kenneth M | Wyoming | 0 BBLs | 0 MCF | Oct 2010 - Jun 2016 |
| Seagull Energy E & P Inc | Wyoming | 0 BBLs | 0 MCF | Jul 1986 - Dec 1998 |
| Seahawk Oil International Inc | Wyoming | 0 BBLs | 0 MCF | May 1987 - Jun 1989 |
| Seale Oilfield Consultants Inc | Wyoming | 0 BBLs | 0 MCF | Jul 1987 - Apr 1997 |
| Seedy Draw LLC | Wyoming | 253 BBLs | 0 MCF | Apr 2022 - Jan 2026 |
| Seer Operating LLC | Wyoming | 0 BBLs | 0 MCF | Oct 2006 - Oct 2016 |
| Seguro Oil & Gas Inc | Wyoming | 0 BBLs | 0 MCF | Mar 1981 - Jul 1992 |
| Semple William C | Wyoming | 0 BBLs | 0 MCF | Jan 1989 - Jun 1996 |
| Sendero Resources LLC | Wyoming | 198 BBLs | 9,660 MCF | Nov 2024 - Jan 2026 |
| Sentry Oil Corporation | Wyoming | 0 BBLs | 0 MCF | Feb 1984 - Aug 1987 |
| Seven Sisters Oil & Gas LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2018 - Jan 2022 |
| Seyon LLC | Wyoming | 0 BBLs | 0 MCF | May 2002 - Nov 2004 |
| Sgcu GP LLC | Wyoming | 11 BBLs | 0 MCF | Jul 2017 - Jan 2026 |
| SGGS Partnership | Wyoming | 0 BBLs | 0 MCF | Jan 1994 - Apr 2006 |
| Shaker Energy Investments | Wyoming | 0 BBLs | 0 MCF | Sep 1998 - Dec 2015 |
| Shakespeare Oil Field Service LLC | Wyoming | 0 BBLs | 0 MCF | Mar 2014 - Feb 2022 |
| Shakespeare Oil Inc | Wyoming | 0 BBLs | 0 MCF | Aug 1984 - Apr 2017 |
| Shar Alan Oil Company | Wyoming | 0 BBLs | 0 MCF | Apr 1982 - Dec 1991 |
| 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 - Feb 2026 |
| 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 | 14,764 BBLs | 618 MCF | Jan 2025 - Feb 2026 |
| 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 | 0 BBLs | 0 MCF | Jun 2000 - Dec 2025 |