| 1 | R & H LLC | Ardmore, OK 73401-6329 | Oil & Gas Operator | Mar 2015 |
| 2 | R & S Oil Company | Tonkawa, OK 74653 | Oil & Gas Operator | Nov 2013 |
| 3 | R L Turner Oil Company LLC | Duncan, OK 73533 | Oil Operator | Aug 2025 |
| 4 | Ra-Jac LLC | Norman, OK 73072 | Oil & Gas Operator | Sep 2025 |
| 5 | Raizen Oil Company | Velma, OK 73091 | Oil & Gas Operator | Feb 2016 |
| 6 | Raizen Oil LLC | Duncan, OK 73533-4657 | Oil & Gas Operator | Nov 2003 |
| 7 | Ramsey Property Management LLC | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Aug 2025 |
| 8 | Ramsey Property MGMT Inc | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Mar 2019 |
| 9 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 10 | Range Production Company, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2025 |
| 11 | Ranken Energy Corporation | Edmond, OK 73013 | Oil & Gas Operator | Aug 2025 |
| 12 | Rar Properties LLC | Duncan, OK 73533 | Oil Operator | Jul 2025 |
| 13 | Rasmussen, Hal J. Operating, Inc | Midland, TX 79701 | Oil & Gas Operator | Apr 2009 |
| 14 | Ratliff City Trucking Inc | Ratliff City, OK 73481-9603 | Oil & Gas Operator | Feb 2018 |
| 15 | Raven Resources LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | Aug 2025 |
| 16 | Ray Herman | Haskell, OK 74436-0446 | Oil & Gas Operator | Dec 2021 |
| 17 | Raye Oil Company | Velma, OK 73491-0482 | Oil & Gas Operator | Oct 2012 |
| 18 | Reames Jr Keith E | Duncan, OK 73534-0246 | Oil & Gas Operator | Jul 1999 |
| 19 | Rebellion Energy LLC | Tulsa, OK 74135-6241 | Oil & Gas Operator | Jun 2022 |
| 20 | Red Earth Oil & Gas, Inc. | Oklahoma City, OK 73159 | Oil & Gas Operator | Oct 2021 |
| 21 | Red Wolf Operating LLC | Edmond, OK 73003-2179 | Oil & Gas Operator | Sep 2025 |
| 22 | Redbud Oil Company | Elmore City, OK 73433-8637 | Oil Operator | Aug 2025 |
| 23 | Redhill Operating LLC | Duncan, OK 73533 | Oil & Gas Operator | Aug 2025 |
| 24 | Redland Resources LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Sep 2025 |
| 25 | Reid Williams Operating Inc | Shreveport, LA 71106-6223 | Oil & Gas Operator | Aug 2025 |
| 26 | Reign Operating LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2025 |
| 27 | Remora Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 28 | Reo Resources Inc | | Oil & Gas Operator | Apr 2018 |
| 29 | Rice Patricia Dba Rice Oil | Duncan, OK 73533-1888 | Oil Operator | Jan 2021 |
| 30 | Richardson WM S | Duncan, OK 73533 | Oil Operator | Jun 2013 |
| 31 | Ricks Exploration Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 32 | Ridge Petroleum Inc. | Tyler, TX 75701 | Oil & Gas Operator | Dec 2025 |
| 33 | Rif Raf Inc | Norman, OK 73069 | Oil Operator | May 1999 |
| 34 | Rimrock Resource Operating LLC | Tulsa, OK 74103-4462 | Oil & Gas Operator | Aug 2025 |
| 35 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2025 |
| 36 | RJ Williams Oil & Gas LLC | Ardmore, OK 73401 | Oil & Gas Operator | Aug 2025 |
| 37 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Sep 2025 |
| 38 | Roan Resources LLC | Tulsa, OK 74103-3729 | Oil & Gas Operator | Apr 2024 |
| 39 | Roberson Oil Company | Houston, TX 77046 | Oil & Gas Operator | Sep 2025 |
| 40 | Robinson Oil Co. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 41 | Robinson Operating Company | Abilene, TX 79604 | Oil & Gas Operator | Aug 2012 |
| 42 | Robinson Tracy D | Duncan, OK 73534 | Oil Operator | Oct 2018 |
| 43 | Rocket Oil Company | Duncan, OK 73534 | Oil & Gas Operator | Apr 2015 |
| 44 | Romax Corporation | Ardmore, OK 73401-8882 | Oil & Gas Operator | Feb 2022 |
| 45 | Roring Arthur | Ratliff City, OK 73481 | Oil Operator | Aug 2025 |
| 46 | Roring Jr Roy W | Duncan, OK 73533-3048 | Oil & Gas Operator | Aug 2022 |
| 47 | Roring Roy W | Ardmore, OK 73401 | Oil & Gas Operator | Dec 1998 |
| 48 | Rose Operating Company | Tulsa, OK 74101-2391 | Oil & Gas Operator | Dec 2014 |
| 49 | Rosewood Resources Inc | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |
| 50 | Roundup Oil LLC | Springer, OK 73458 | Oil & Gas Operator | Sep 2025 |
| 51 | Rox Exploration Inc | Norman, OK 73069-6301 | Oil & Gas Operator | Sep 2025 |
| 52 | Rue Johnny B | Duncan, OK 73533-2019 | Oil & Gas Operator | Jan 2025 |
| 53 | Russell, John R | | Oil Operator | Mar 2025 |