| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Sam Jones & Assoc Prod Div Inc | Oil & Gas Operator | Feb 1999 | |
| 2 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
| 3 | Santa Fe-Andover Oil Co | Tulsa, OK 74172 | Oil & Gas Operator | Sep 2000 |
| 4 | Sante Fe Minerals | Oil & Gas Operator | Dec 1987 | |
| 5 | Settco Oil & Gas | Oil & Gas Operator | May 1994 | |
| 6 | Shell Oil Company | Houston, TX 77210 | Oil & Gas Operator | Apr 2015 |
| 7 | Sierra Production Company | Oil & Gas Operator | May 1986 | |
| 8 | Sound Resources Corporation | Oil & Gas Operator | Jan 2004 | |
| 9 | South Oak Production Company | Oil & Gas Operator | Jun 2010 | |
| 10 | Southwestern Energy Prod Co | Houston, TX 77032 | Oil & Gas Operator | Jun 2015 |
| 11 | SRP Production Corp. | Oil & Gas Operator | Nov 1997 | |
| 12 | Stone Petroleum Corporation | Oil & Gas Operator | Dec 1996 | |
| 13 | Sugar Bowl Industrial Gas Corp | Oil Operator | Dec 1983 | |
| 14 | Sun Exploration-Production Co. | Oil & Gas Operator | Jan 1990 |