| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | S & K Oil Compan | Oil Operator | Sep 1989 | |
| 2 | S & S Oil & Gas LLC | Skiatook, OK 74070 | Oil & Gas Operator | Jul 2016 |
| 3 | Shaw George R | Oil & Gas Operator | Mar 1992 | |
| 4 | Shaw Robert Lesl | Oil Operator | Oct 1989 | |
| 5 | Shields Oil Prod | Oil & Gas Operator | Aug 1995 | |
| 6 | Shields Oil Producers Inc. | Russell, KS 67665 | Oil Operator | Feb 2026 |
| 7 | Simasko Producti | Oil Operator | Dec 1986 | |
| 8 | SMG Resources LLC | Oil & Gas Operator | Feb 2026 | |
| 9 | Smith Oil Operations | Oil & Gas Operator | Feb 2026 | |
| 10 | Smoky Valley Res | Oil & Gas Operator | Dec 1995 | |
| 11 | Sorensen, Kim A. | Abbyville, KS 67510 | Oil Operator | Oct 2025 |
| 12 | Southern Hills Gas Co. | Oil Operator | Oct 2025 | |
| 13 | Southern States | Oil & Gas Operator | Jul 1988 | |
| 14 | Stelbar Oil Corporation, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 15 | Sterling Drillin | Oil & Gas Operator | Mar 1992 | |
| 16 | Sterling Drilling Company | Pratt, KS 67124 | Oil & Gas Operator | Apr 2014 |