| 1 | R & B Trucking | Crescent, OK 73028-0775 | Oil & Gas Operator | Nov 2021 |
| 2 | R360 Oklahoma LLC | The Woodlands, TX 77381 | Oil Operator | Jul 2021 |
| 3 | Ra-Jac LLC | Norman, OK 73069 | Oil & Gas Operator | Feb 2026 |
| 4 | Raf Oil Company | Oklahoma City, OK 73120-1944 | Oil & Gas Operator | Jul 2013 |
| 5 | Rafter H Operating LLC | El Reno, OK 73036 | Oil & Gas Operator | Jan 2026 |
| 6 | Ram Asset Management Co | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2015 |
| 7 | Ramco Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2006 |
| 8 | Ramsey Engineering Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 1993 |
| 9 | Ramsey Nichols Operating Company LLC | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Feb 2026 |
| 10 | Ramsey Property Management LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Jan 2026 |
| 11 | Ramsey Property MGMT Inc | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Mar 2019 |
| 12 | Randy And Jan Walker Oil Company LLC | Konawa, OK 74849-9333 | Oil & Gas Operator | Feb 2026 |
| 13 | Randy Inc | Hennessey, OK 73742 | Oil & Gas Operator | Jan 2026 |
| 14 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 15 | Range Production Company, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 16 | Ranken Energy Corporation | Edmond, OK 73013 | Oil & Gas Operator | Feb 2026 |
| 17 | Raven Resources LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | Jan 2026 |
| 18 | Raw Crude Oil & Gas, L.L.C. | Norman, OK 73069 | Oil & Gas Operator | Jan 2026 |
| 19 | Raydon Exploration, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 2026 |
| 20 | Raydon Production Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 1992 |
| 21 | RDH Enterprises Inc | El Reno, OK 73036 | Oil & Gas Operator | May 2015 |
| 22 | Rebellion Energy LLC | Tulsa, OK 74135-6241 | Oil & Gas Operator | Jun 2022 |
| 23 | Red Bluff Resources Operating LLC | Oklahoma City, OK 73112-5468 | Oil & Gas Operator | Jan 2026 |
| 24 | Red Eagle Oil Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2005 |
| 25 | Red Hawk Resources Inc | Edmond, OK 73003-3207 | Oil & Gas Operator | Feb 2026 |
| 26 | Red Plains Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Oct 2017 |
| 27 | Red Rocks Oil & Gas Operating LLC | Oklahoma City, OK 73103-4821 | Oil & Gas Operator | Feb 2026 |
| 28 | Red Wolf Operating LLC | Edmond, OK 73003-2179 | Oil & Gas Operator | Feb 2026 |
| 29 | Redfork Operations LLC | Dover, OK 73734 | Oil & Gas Operator | Feb 2026 |
| 30 | Redland Resources LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2026 |
| 31 | Redstone Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Jan 2020 |
| 32 | Reid Williams Operating Inc | Shreveport, LA 71106-6223 | Oil & Gas Operator | Jan 2026 |
| 33 | Revelation Resources | Cypress, TX 77410-2578 | Oil & Gas Operator | Jan 2026 |
| 34 | Revolution Operating Company,LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2024 |
| 35 | Revolution Resources LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jun 2023 |
| 36 | Ricks Expl Acquisition Corp | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2004 |
| 37 | Ricks Expl Acquisition LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2013 |
| 38 | Ricks Exploration Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 39 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Apr 2026 |
| 40 | Riley Lee Roy | Chickasha, OK 73018-9306 | Oil & Gas Operator | May 2006 |
| 41 | Rimrock Resource Operating LLC | Tulsa, OK 74103-4462 | Oil & Gas Operator | Feb 2026 |
| 42 | Rio Blanco Operating LLC | Victoria, TX 77904 | Oil & Gas Operator | Jan 2026 |
| 43 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 44 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Feb 2026 |
| 45 | RMS Monte Christo, LLC | Snowmass VLG., CO 81615 | Oil & Gas Operator | Mar 2023 |
| 46 | Roan Resources LLC | Tulsa, OK 74103-3729 | Oil & Gas Operator | Apr 2024 |
| 47 | Rockwell Energy Corporation | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2014 |
| 48 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 49 | Roka Management Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Jan 2026 |
| 50 | Roka Resources Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Jan 2026 |
| 51 | Rosewood Resources Inc | Dallas, TX 75201 | Oil & Gas Operator | Apr 2026 |
| 52 | Rover Operating, LLC | Chicago, IL 60606 | Oil & Gas Operator | Jan 2026 |
| 53 | Rox Exploration Inc | Norman, OK 73069-6301 | Oil & Gas Operator | Feb 2026 |
| 54 | RR Oil Well Operations LLC | Ringwood, OK 73768 | Oil & Gas Operator | Feb 2026 |
| 55 | Rupe Oil Company Inc | Wichita, KS 67278 | Oil & Gas Operator | Dec 2025 |
| 56 | Russell D Meloy Oil & Gas Co | Enid, OK 73703-1623 | Oil & Gas Operator | Feb 2026 |