Oil & Gas Companies in Riley County, KS
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Brandt Production Company, Inc. | Wichita, KS 67230 | Oil Operator | Jan 2003 |
| 2 | Elk Oil Enterprises, LLC | Wetmore, KS 66550 | Oil Operator | Dec 2009 |
| 3 | Haas Petroleum, LLC | Prairie VIllage, KS 66208 | Oil Operator | Jun 2025 |
| 4 | Patrick R J Oper | | Oil & Gas Operator | Jan 1995 |
| 5 | Pioneer Feedyard, LLC | Oakley, KS 67748 | Oil Operator | Jun 2025 |
| 6 | Piqua Petro, Inc. | Piqua, KS 66761 | Oil Operator | Jun 2025 |
| 7 | Prairie Oil, LLC | Louisburg, KS 66053 | Oil Operator | Apr 2025 |
| 8 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 9 | Wilton Petroleum, Inc. | Canton, KS 67428 | Oil & Gas Operator | Jun 2025 |
Production numbers shown above are only for Riley County, KS and for the production period listed.