| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Ranchers Exploration Partners LLC | Oil & Gas Operator | Jan 2015 | |
| 2 | Recovery Energy Inc | Oil & Gas Operator | Jan 2014 | |
| 3 | Red Hawk Petroleum LLC | Oil & Gas Operator | Mar 2025 | |
| 4 | Red Willow Production, LLC | Ignacio, CO 81137 | Oil & Gas Operator | Oct 2015 |
| 5 | Renegade Oil & Gas Company LLC | Oil & Gas Operator | Jul 2025 | |
| 6 | Richardson Operating Company | Denver, CO 80237 | Oil & Gas Operator | Jul 2025 |
| 7 | Rme Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2016 |
| 8 | Rocket Petroleum Company | Oil & Gas Operator | Aug 2005 | |
| 9 | Rubicon Oil & Gas, LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 10 | RWL Enterprises | Oil & Gas Operator | Feb 2017 |