| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | S & K Oil Compan | Oil Operator | Sep 1989 | |
| 2 | Sagebrush Operating LLC | Denver, CO 80203 | Oil & Gas Operator | May 2025 |
| 3 | Seagull Operatin | Oil & Gas Operator | Jul 1995 | |
| 4 | Servco Productio | Oil Operator | Dec 1992 | |
| 5 | SH Oil Operations LLC | Wichita, KS 67277 | Oil & Gas Operator | Jun 2025 |
| 6 | Sharp Engineerin | Oil Operator | Aug 1995 | |
| 7 | Shelby Resources LLC | Denver, CO 80207 | Oil & Gas Operator | Jun 2025 |
| 8 | Siroky Oil Management | Pratt, KS 67124 | Oil & Gas Operator | Jun 2025 |
| 9 | Southwind Consulting | Pratt, KS 67124 | Oil Operator | Oct 1997 |
| 10 | Spines Explorati | Oil & Gas Operator | Dec 1990 | |
| 11 | Sterling Petrole | Oil & Gas Operator | Sep 1992 | |
| 12 | Stoeppelwerth DR | Oil Operator | May 1993 | |
| 13 | Studer Oil Co. | Pratt, KS 67124 | Oil Operator | Oct 2019 |
| 14 | Studer Oil Compa | Oil & Gas Operator | Feb 1993 | |
| 15 | Sunwest Explorat | Oil & Gas Operator | Nov 1985 | |
| 16 | Supernova Energy, Inc. | Wichita, KS 67226 | Oil & Gas Operator | Nov 2019 |