| 1 | R & B Trucking | Crescent, OK 73028-0775 | Oil & Gas Operator | Nov 2021 |
| 2 | R & R Oil Company | Pampa, TX 79065 | Oil & Gas Operator | Jul 2002 |
| 3 | R B Energy, Inc | Manchester, KY 40962 | Oil & Gas Operator | Jan 2015 |
| 4 | R C Oil Company Inc | Nowata, OK 74048-3402 | Oil Operator | Nov 2021 |
| 5 | Rainwater A L | Okmulgee, OK 74447 | Oil & Gas Operator | Jan 2013 |
| 6 | Ramey L E SR | Mounds, OK 74047 | Oil Operator | Jan 2000 |
| 7 | Ramey Oil Corporation | Kiefer, OK 74041-0699 | Oil & Gas Operator | Jul 2025 |
| 8 | Ramey Sharp N Glenn SD Unit | Tulsa, OK 74120 | Oil Operator | Nov 1998 |
| 9 | Ramey Wayne | Mounds, OK 74047 | Oil & Gas Operator | Jun 2025 |
| 10 | Rampage Energy Inc | Bristow, OK 74010-6415 | Oil & Gas Operator | Apr 2020 |
| 11 | Ranch Creek Exploration LLC | Tulsa, OK 74105 | Oil & Gas Operator | Jun 2025 |
| 12 | Ranger Systems Inc | Tulsa, OK 74145 | Oil Operator | Feb 2020 |
| 13 | Raper Brice Oil Company LLC | Yale, OK 74085-6865 | Oil & Gas Operator | Apr 2015 |
| 14 | Ray'S Oil Company | Boynton, OK 74422 | Oil & Gas Operator | Jun 2025 |
| 15 | RDH Enterprises, Inc. | El Reno, OK 73036 | Oil & Gas Operator | May 2015 |
| 16 | Reddy Oil & Gas Corporation | Tulsa, OK 74108-5105 | Oil & Gas Operator | Jun 2025 |
| 17 | Reed Power Tongs Inc | Seminole, OK 74818 | Oil & Gas Operator | Jun 2025 |
| 18 | Reliable Oil Industries Inc | Tulsa, OK 74133 | Oil & Gas Operator | Jul 2024 |
| 19 | Resource Operations, Inc. | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 20 | Revelation Resources | Cypress, TX 77410-2578 | Oil & Gas Operator | Jun 2025 |
| 21 | Rhoades Oil Co | Tulsa, OK 74136-5575 | Oil & Gas Operator | Aug 2013 |
| 22 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 23 | Robbins Thomas D & Charlene A Revocable Trust | Plano, TX 75093-7471 | Oil Operator | Jul 2018 |
| 24 | Roberson, Joe | Vernon, TX 76385 | Oil & Gas Operator | Feb 2015 |
| 25 | Roberts Zetau J Fisk | Moore, OK 73160 | Oil & Gas Operator | Sep 1993 |
| 26 | Robinowitz Oil Company | Tulsa, OK 74136-1429 | Oil & Gas Operator | Feb 2023 |
| 27 | Rock Creek Energy Co | Ada, OK 74820-5725 | Oil Operator | Jul 2022 |
| 28 | Rock Oil Company | Broken Arrow, OK 74014-6106 | Oil & Gas Operator | Jun 2025 |
| 29 | Rockford CBM LLC | Tulsa, OK 74103-4335 | Oil & Gas Operator | Jan 2013 |
| 30 | Rogers County Coal Seam LLC | Ridgeland, MS 39157-8635 | Oil & Gas Operator | Mar 2015 |
| 31 | Ron & Dan'S Oil LTD | Barnsdall, OK 74002-0628 | Oil & Gas Operator | May 2011 |
| 32 | Rongey Oil | Jenks, OK 74037-3621 | Oil & Gas Operator | Jan 2013 |
| 33 | Rose Rock Resources Inc | Wagoner, OK 74467-8362 | Oil & Gas Operator | Jun 2025 |
| 34 | Rowe Energy | Beggs, OK 74421-0240 | Oil & Gas Operator | Mar 2015 |
| 35 | Royal Energy Resources LTD | Denver, CO 80221 | Oil & Gas Operator | May 2013 |
| 36 | Russell Carl G | Coweta, OK 74429 | Oil & Gas Operator | Mar 2015 |