| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Rains & Williams | Oil & Gas Operator | Nov 1995 | |
| 2 | Range Oil Co., Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jan 2020 |
| 3 | Range Oil Compan | Oil & Gas Operator | Nov 1995 | |
| 4 | Resource Operations, Inc. | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 5 | Richardson Developments | Oil Operator | Sep 2023 | |
| 6 | Rierson Energy, LLC | McPherson, KS 67460 | Oil & Gas Operator | Jan 2024 |
| 7 | Robert Hopkins Operations, LLC | Salina, KS 67401 | Oil Operator | Jan 2024 |