| 1 | R & A Moore, Inc. | Cleburne, TX 76033 | Oil & Gas Operator | Apr 2025 |
| 2 | R M S Oil & Gas | Amarillo, TX 79101-2445 | Oil & Gas Operator | Sep 1997 |
| 3 | Ram Asset Management Co | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2015 |
| 4 | Ramco Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2006 |
| 5 | Ramsey George H Estate | Ardmore, OK 73401-3644 | Oil & Gas Operator | Nov 2013 |
| 6 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 7 | Range Production Company, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2025 |
| 8 | Raven Resources LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | Jan 2025 |
| 9 | Raydon Exploration, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 2025 |
| 10 | RB Operating Company | Shawnee, OK 74802-1488 | Oil & Gas Operator | Apr 2015 |
| 11 | Reading & Bates Petroleum Co | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2009 |
| 12 | Rebellion Energy LLC | Tulsa, OK 74135-6241 | Oil & Gas Operator | Jun 2022 |
| 13 | Red Bluff Resources Operating LLC | Oklahoma City, OK 73112-5468 | Oil & Gas Operator | Jan 2025 |
| 14 | Red Hawk Resources Inc | Edmond, OK 73003-3207 | Oil & Gas Operator | Feb 2025 |
| 15 | Red Rock Resources, L.L.C. | Wichita Falls, TX 76310 | Oil & Gas Operator | Jan 2025 |
| 16 | Redland Resources, LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2025 |
| 17 | Redline Energy LLC | Dover, OK 73734 | Oil & Gas Operator | Feb 2025 |
| 18 | Redstone Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Jan 2020 |
| 19 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2025 |
| 20 | Revelation Resources | Cypress, TX 77410-2578 | Oil & Gas Operator | Jan 2025 |
| 21 | Revolution Operating Company,LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2024 |
| 22 | Ricks Exploration Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 23 | Rig Petroleum, LLC | Spearman, TX 79081 | Oil & Gas Operator | Apr 2025 |
| 24 | Rives Owen H | Holdenville, OK 74848-0913 | Oil & Gas Operator | Nov 2000 |
| 25 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2025 |
| 26 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Feb 2025 |
| 27 | RMS Monte Christo, LLC | Snowmass VLG., CO 81615 | Oil & Gas Operator | Mar 2023 |
| 28 | Rockford Energy Partners III,LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2012 |
| 29 | Roff Operating Company LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 30 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 31 | RTC Resources, LLP | Weatherford, OK 73096 | Oil & Gas Operator | Apr 2025 |
| 32 | Rue Johnny B | Duncan, OK 73533-2019 | Oil & Gas Operator | Jan 2025 |
| 33 | Rupe Oil Company, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Dec 2024 |