Oil & Gas Companies in Sheridan County, KS
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Rains And Williamson Oil Co. | Wichita, KS 67277 | Oil & Gas Operator | Jun 2025 |
| 2 | Reach Petroleum | | Oil & Gas Operator | Jan 1994 |
| 3 | Red Oak Energy, Inc. | Wichita, KS 67207 | Oil & Gas Operator | Jun 2025 |
| 4 | Reef Operating, Inc. | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 5 | Reilly Oil E & P | | Oil Operator | Jun 2025 |
| 6 | Ritchie Explorat | | Oil & Gas Operator | Dec 1996 |
| 7 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jun 2025 |
| 8 | Ritchie, A. Scott | Wichita, KS 67202 | Oil Operator | Mar 1988 |
| 9 | RL Investment, LLC | Hill City, KS 67642 | Oil Operator | Jun 2025 |
| 10 | RLT Investment | Morland, KS 67650 | Oil Operator | Mar 2009 |
| 11 | Russell Oil, Inc. | Edmond, OK 73083 | Oil Operator | Jun 2025 |
Production numbers shown above are only for Sheridan County, KS and for the production period listed.