| 1 | R & C Oil And Gas Inc | Ada, OK 74820-3150 | Oil Operator | Jul 2016 |
| 2 | R & H LLC | Ardmore, OK 73401-6329 | Oil & Gas Operator | Mar 2015 |
| 3 | R L Clampitt & Associates LLC | Bartlesville, OK 74006 | Oil & Gas Operator | Sep 2024 |
| 4 | Ra-Jac LLC | Norman, OK 73072 | Oil & Gas Operator | Oct 2024 |
| 5 | Ramco Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2006 |
| 6 | Ramsey Nichols Operating Company LLC | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Oct 2024 |
| 7 | Ramsey Property Management LLC | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Sep 2024 |
| 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 | Oct 2024 |
| 11 | Ranken Energy Corporation | Edmond, OK 73013 | Oil & Gas Operator | Oct 2024 |
| 12 | Raw Crude Oil & Gas LLC | Norman, OK 73069 | Oil & Gas Operator | Oct 2024 |
| 13 | Raw Production LLC | Lindsay, OK 73052 | Oil & Gas Operator | Sep 2024 |
| 14 | Raydon Exploration, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2024 |
| 15 | RB Operating Company | Shawnee, OK 74802-1488 | Oil & Gas Operator | Apr 2015 |
| 16 | RDH Enterprises, Inc. | El Reno, OK 73036 | Oil & Gas Operator | May 2015 |
| 17 | Reading & Bates Petroleum Co | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2009 |
| 18 | Rebellion Energy LLC | Tulsa, OK 74135-6241 | Oil & Gas Operator | Jun 2022 |
| 19 | Red Bluff Resources Operating LLC | Oklahoma City, OK 73112-5468 | Oil & Gas Operator | Sep 2024 |
| 20 | Red Earth Oil & Gas, Inc. | Oklahoma City, OK 73159 | Oil & Gas Operator | Oct 2021 |
| 21 | Red Hawk Resources Inc | Edmond, OK 73003-3207 | Oil & Gas Operator | Oct 2024 |
| 22 | Red Rocks Oil & Gas Operating LLC | Oklahoma City, OK 73103-4821 | Oil & Gas Operator | Oct 2024 |
| 23 | Red Wolf Operating LLC | Edmond, OK 73003-2179 | Oil & Gas Operator | Sep 2024 |
| 24 | Redland Resources, LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Oct 2024 |
| 25 | Redline Energy LLC | Dover, OK 73734 | Oil & Gas Operator | Sep 2024 |
| 26 | Regency Exploration Inc | Oklahoma City, OK 73102-5605 | Oil & Gas Operator | Mar 1999 |
| 27 | Research Oil Company Inc | Norman, OK 73070-8776 | Oil & Gas Operator | Aug 2019 |
| 28 | Revelation Resources | Cypress, TX 77410-2578 | Oil & Gas Operator | Sep 2024 |
| 29 | Revilo Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jul 2021 |
| 30 | Revolution Operating Company,LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2024 |
| 31 | Ricks Exploration Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 32 | Rimrock Resource Operating LLC | Tulsa, OK 74103-4462 | Oil & Gas Operator | Sep 2024 |
| 33 | Rio Grande Drilling Company | San Antonio, TX 78212 | Oil & Gas Operator | Dec 1999 |
| 34 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2024 |
| 35 | Rja Energy LLC | Norman, OK 73069-8224 | Oil & Gas Operator | Oct 2024 |
| 36 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Oct 2024 |
| 37 | Roan Resources LLC | Tulsa, OK 74103-3729 | Oil & Gas Operator | Apr 2024 |
| 38 | Roberson Oil Company | Houston, TX 77046 | Oil & Gas Operator | Oct 2024 |
| 39 | Robson Petroleum Company | Tulsa, OK 74104 | Oil & Gas Operator | Jan 1995 |
| 40 | Roka Management Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Oct 2024 |
| 41 | Roka Resources Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Aug 2024 |
| 42 | Rosetta Resources Operating LP | San Antonio, TX 78216 | Oil & Gas Operator | Dec 2024 |
| 43 | Rover Operating, LLC | Chicago, IL 60606 | Oil & Gas Operator | Sep 2024 |
| 44 | Rox Exploration Inc | Norman, OK 73069-6301 | Oil & Gas Operator | Oct 2024 |
| 45 | Rupe Oil Company, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Aug 2024 |
| 46 | Russell D Meloy Oil & Gas Co | Enid, OK 73703-1623 | Oil & Gas Operator | Sep 2024 |
| 47 | Rustler Energy LLC | Lindsay, OK 73052 | Oil & Gas Operator | Oct 2024 |
| 48 | Ryan Petroleum Corp | Oklahoma City, OK 73102-9024 | Oil & Gas Operator | Aug 1994 |