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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Sonterra Energy, L.L.C. | Colorado | 0 BBLs | 0 MCF | May 2000 - Jul 2022 |
| Soper Production | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2006 |
| Source Gas Energy Services Company | Colorado | 0 BBLs | 0 MCF | Jan 2004 - Mar 2006 |
| Southland Royalty Company LLC | Colorado | 0 BBLs | 0 MCF | Apr 2015 - May 2021 |
| Southwestern Energy Ventures Company LLC | Colorado | 0 BBLs | 0 MCF | Mar 2012 - Feb 2017 |
| Southwestern Production Corp | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2003 |
| Sovereign Energy LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2011 |
| Sovereign Operating Company LLC | Colorado | 0 BBLs | 0 MCF | Oct 2011 - Apr 2016 |
| Spellbound Energy LLC | Colorado | 1,316 BBLs | 2,826 MCF | Nov 2023 - Jan 2025 |
| St Croix Operating Inc | Colorado | 1,335 BBLs | 0 MCF | Jan 1999 - Jan 2025 |
| St James Energy Operating Inc | Colorado | 0 BBLs | 0 MCF | Sep 2005 - Aug 2013 |
| Standley* Robert K Dba Otis Energy | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2023 |
| Star Acquisition VIII LLC | Colorado | 0 BBLs | 0 MCF | Sep 2006 - Nov 2007 |
| Starlight Corporation | Colorado | 0 BBLs | 0 MCF | Oct 2006 - Aug 2007 |
| Starlight Resources LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2006 |
| Stehle Oil Company | Colorado | 0 BBLs | 0 MCF | Jun 1999 - Jun 2021 |
| Stelbar Oil Corp Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Apr 2018 |
| Stephens Energy Company LLC | Colorado | 0 BBLs | 0 MCF | Jun 2005 - Jun 2012 |
| Stephens* James R | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2018 |
| Sterling Energy Company | Colorado | 0 BBLs | 0 MCF | Dec 2003 - Apr 2011 |
| Stewart Petroleum Corporation | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2001 |
| Stone Energy Corporation | Colorado | 0 BBLs | 0 MCF | Feb 2001 - May 2004 |
| Stoneham Production LLC | Colorado | 3 BBLs | 485 MCF | May 2011 - Jan 2025 |
| Strachan Exploration Inc | Colorado | 3,005 BBLs | 29,125 MCF | Jan 1999 - Jan 2025 |
| Stroud Oil Properties Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 2003 |
| Summit Oil & Gas LLC | Colorado | 14,271 BBLs | 8,226 MCF | Sep 2021 - Jan 2025 |
| Summit Operating LLC | Colorado | 0 BBLs | 0 MCF | Sep 2005 - May 2011 |
| Sunburst Inc | Colorado | 25 BBLs | 2,848 MCF | Jun 2001 - Jan 2025 |
| Sundance Energy Inc | Colorado | 0 BBLs | 0 MCF | Jan 2011 - Mar 2014 |
| Sundance Resources. Inc. | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2009 |
| Sunrise Oil And Gas Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 1999 |
| Sunset Plugging & Equipment Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2002 |
| Sure Oil Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2010 |
| Swepi LP | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jul 2020 |
| Swevco - Sabw LLC | Colorado | 1,686 BBLs | 250,785 MCF | Nov 2014 - Jan 2025 |
| Swift Beef Company | Colorado | 0 BBLs | 0 MCF | Dec 2002 - May 2006 |
| SWN Production Company LLC | Colorado | 0 BBLs | 0 MCF | Apr 2012 - May 2023 |
| Synergy Operating LLC | Colorado | 0 BBLs | 0 MCF | Mar 2002 - Jun 2011 |
| Synergy Resources Corporation | Colorado | 0 BBLs | 0 MCF | Sep 2009 - Oct 2022 |
| T P Operating LLC | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 1999 |
| Tabula Rasa Energy LLC | Colorado | 0 BBLs | 0 MCF | Jul 2013 - Aug 2020 |
| Tallkid Operating LLC | Colorado | 0 BBLs | 0 MCF | Jun 2008 - Mar 2010 |
| Tamco Drilling Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Apr 2003 |
| Tarpon Oil Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Mar 2017 |
| Taylor* Rose June | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2010 |
| Taylor* William M | Colorado | 0 BBLs | 0 MCF | Sep 2010 - Nov 2015 |
| Tbi Production Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2004 |
| Tekton Windsor LLC | Colorado | 0 BBLs | 0 MCF | Apr 2012 - Dec 2013 |
| Terra Exploration & Production Company | Colorado | 0 BBLs | 0 MCF | Jan 2001 - Aug 2006 |
| Texaco Exploration And Production Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2002 |