| 1 | R Baker Oil LLC | Okemah, OK 74859-0621 | Oil & Gas Operator | Feb 2024 |
| 2 | R C Taylor Operating Company LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2024 |
| 3 | R D T Properties | Tulsa, OK 74105-7122 | Oil & Gas Operator | Sep 2017 |
| 4 | R K R Exploration | Seminole, OK 74868-9754 | Oil & Gas Operator | Mar 2015 |
| 5 | Ramey Oil Corporation | Kiefer, OK 74041-0699 | Oil & Gas Operator | Mar 2021 |
| 6 | Ramey Wayne | Mounds, OK 74047-0520 | Oil & Gas Operator | Dec 2023 |
| 7 | Rampage Energy Inc | Bristow, OK 74010-6415 | Oil & Gas Operator | Apr 2020 |
| 8 | Ramsey Property MGMT Inc | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Mar 2019 |
| 9 | Rawhide Oil Company | | Oil & Gas Operator | Sep 2011 |
| 10 | Raydon Exploration, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 2024 |
| 11 | Red Fork Oil Co | Lakewood, CO 80215 | Oil & Gas Operator | Aug 1993 |
| 12 | Red Fork Production, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Nov 2023 |
| 13 | Red Hawk Disposal LLC | | Oil Operator | Jun 2023 |
| 14 | Redbud E & P, Inc. | Spring, TX 77379 | Oil & Gas Operator | Apr 2024 |
| 15 | Reed Power Tongs Inc | Seminole, OK 74818-1462 | Oil & Gas Operator | Jan 2024 |
| 16 | Research Oil Company Inc | Norman, OK 73070-8776 | Oil & Gas Operator | Aug 2019 |
| 17 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2024 |
| 18 | Resources Investment Corp | Denver, CO 80202 | Oil & Gas Operator | May 2023 |
| 19 | Revilo Exploration LLC | | Oil & Gas Operator | Apr 2020 |
| 20 | Revilo Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jul 2021 |
| 21 | Ric Petroleum, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2003 |
| 22 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Feb 2024 |
| 23 | Roadrunner Energy, Inc. | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2015 |
| 24 | Roberson Oil Company | Houston, TX 77046 | Oil & Gas Operator | Jan 2024 |
| 25 | Rockbridge Petroleum LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2009 |
| 26 | Rockland Oil Company | Addison, TX 75001 | Oil & Gas Operator | Feb 2024 |
| 27 | Rockwell Drilling Company | New York, NY 10013 | Oil & Gas Operator | Dec 2005 |
| 28 | Rogers Dan R | Okemah, OK 74847 | Oil & Gas Operator | Apr 2020 |
| 29 | Rogers Jerry L | Cushing, OK 74023-0911 | Oil & Gas Operator | Mar 2017 |
| 30 | Rose Dan And Bill | Henryetta, OK 74437-1450 | Oil & Gas Operator | Dec 2023 |
| 31 | Rose Operating Company | Tulsa, OK 74101-2391 | Oil & Gas Operator | Dec 2014 |
| 32 | Rose Rock Resources Inc | Wagoner, OK 74467-8362 | Oil & Gas Operator | Jan 2024 |
| 33 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2024 |
| 34 | Roth Gary E | Tonkawa, OK 74653-2033 | Oil & Gas Operator | Jan 2020 |
| 35 | Rowe Energy | Beggs, OK 74421-0240 | Oil & Gas Operator | Mar 2015 |
| 36 | Rowe Stephen Oil Properties LLC | Hunt, TX 78024-0408 | Oil & Gas Operator | Apr 2020 |
| 37 | Roxanna Oil Company | Oklahoma City, OK 73120-2717 | Oil Operator | Aug 2016 |
| 38 | Royal Oaks Petroleum Corp | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2001 |