| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Ranch Oil Company | West Linn, OR 97068 | Oil & Gas Operator | Mar 2024 |
| 2 | RDG Oil & Gas LLC | Post Falls, ID 82854 | Oil & Gas Operator | Mar 2017 |
| 3 | Redstone Gas Partners LLC | Denver, CO 80202 | Gas Operator | Mar 2001 |
| 4 | Redstone Resources Inc | Newcastle, WY 82701 | Gas Operator | Dec 2010 |
| 5 | Richardson Operating Company | Denver, CO 80237 | Oil & Gas Operator | Feb 2024 |
| 6 | Rio Blanco Energy, Inc. | Littleton, CO 80121 | Oil & Gas Operator | Oct 2002 |