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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Samson Oil Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2001 |
| Samson Resources Company | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2016 |
| San Juan Basin Consortium LTD | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2000 |
| San Marco Petroleum Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2024 |
| Sand Hills Society | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Oct 2009 |
| Sandlin Oil Corp | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2024 |
| Sandridge Energy Inc (Federal Wells Only) | Colorado | 0 BBLs | 0 MCF | Oct 2006 - Jun 2013 |
| Sandridge Exploration & Production LLC | Colorado | 0 BBLs | 0 MCF | Dec 2015 - Feb 2021 |
| Santa Fe Natural Resources Inc | Colorado | 0 BBLs | 0 MCF | Jul 2013 - Dec 2021 |
| Santos Tog Corp | Colorado | 0 BBLs | 0 MCF | Apr 2006 - Jul 2007 |
| Sawtooth Energy Partners LLC | Colorado | 0 BBLs | 0 MCF | Jul 2003 - Nov 2005 |
| Schmid Properties Inc | Colorado | 385 BBLs | 0 MCF | Jan 1999 - Feb 2024 |
| Schneider Energy Services Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Dec 2023 |
| Schreider & Company, Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2023 |
| Schuh And Associates | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Feb 2000 |
| Schutz* Harold | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2009 |
| Schutz* Richard E | Colorado | 0 BBLs | 0 MCF | Aug 2010 - Feb 2024 |
| Scout Energy Management LLC | Colorado | 0 BBLs | 0 MCF | Dec 2021 - Jan 2024 |
| Seeley Oil Company LLC | Colorado | 6,993 BBLs | 7,589 MCF | Dec 2015 - Feb 2024 |
| Setex Oil & Gas Company | Colorado | 0 BBLs | 0 MCF | Feb 2000 - May 2006 |
| SG Interests I LTD | Colorado | 0 BBLs | 155,935 MCF | Jan 1999 - Mar 2024 |
| Shawnee Oil Development Co Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 2024 |
| Shepler & Thomas Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2001 |
| Silver Mountain Energy LLC | Colorado | 0 BBLs | 0 MCF | Mar 2023 - Sep 2023 |
| Silverado Oil | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Aug 2000 |
| Simcoe LLC | Colorado | 4 BBLs | 8,903,176 MCF | Mar 2020 - Feb 2024 |
| Simmons, Inc.* D. J. | Colorado | 0 BBLs | 0 MCF | Mar 2002 - May 2020 |
| Singletree Resources Inc | Colorado | 0 BBLs | 0 MCF | Jan 2008 - May 2013 |
| Skaer Properties LTD Partnership | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 2013 |
| Slate River Resources LLC | Colorado | 0 BBLs | 0 MCF | Jan 2006 - Apr 2008 |
| Slawson Exploration Company Inc | Colorado | 0 BBLs | 0 MCF | Jul 2010 - Sep 2013 |
| SM Energy Company | Colorado | 0 BBLs | 0 MCF | Dec 2007 - Jun 2009 |
| Smith Energy Corp | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Sep 2023 |
| Smith Energy Limited Partnership 1988 | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 2012 |
| Smith Energy LLC | Colorado | 0 BBLs | 95,318 MCF | Jan 2015 - Feb 2024 |
| Smith Oil Properties Inc | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Nov 2022 |
| Snowden Oil Co | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jun 1999 |
| Snyder Energy Pipeline | Colorado | 0 BBLs | 0 MCF | Jan 1999 - Jan 1999 |
| Snyder Oil Corp | Colorado | 0 BBLs | 0 MCF | Jan 1999 - May 2005 |
| Sonat Raton, L.L.C. | Colorado | 0 BBLs | 0 MCF | Jun 1999 - Sep 2005 |
| 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 | 1,257 BBLs | 2,736 MCF | Nov 2023 - Feb 2024 |
| St Croix Operating Inc | Colorado | 1,309 BBLs | 0 MCF | Jan 1999 - Feb 2024 |