| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | S S M Partnership | Oil & Gas Operator | Jul 1992 | |
| 2 | Smith Operating And MGMT Co. | Shreveport, LA 71161 | Oil & Gas Operator | Jun 2023 |
| 3 | Southern Production Co | Madill, OK 73446 | Oil & Gas Operator | May 2025 |
| 4 | Spirit Petroleum Company | Oil & Gas Operator | Apr 1999 | |
| 5 | Stallion Oil Corporation | Oil & Gas Operator | Nov 1987 | |
| 6 | Strahan Oil & Gas Co., Inc. | Gas Operator | Oct 1983 | |
| 7 | Sun Exploration-Production Co. | Oil & Gas Operator | Jan 1990 | |
| 8 | SW Associates | Oil & Gas Operator | Dec 1985 |