| 1 | R & B Trucking | Crescent, OK 73028-0775 | Oil & Gas Operator | Nov 2021 |
| 2 | R & N Associates | Grapevine, TX 76051 | Oil & Gas Operator | Feb 2025 |
| 3 | R & N Oil Company | Fairfax, OK 74637 | Oil & Gas Operator | May 2013 |
| 4 | R C Taylor Operating Company LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2025 |
| 5 | R E Blaik Inc | Edmond, OK 73013-6675 | Oil & Gas Operator | Dec 2025 |
| 6 | R E C Tulsa Corporation | Oklahoma City, OK 73107 | Oil & Gas Operator | Apr 2014 |
| 7 | R L Clampitt & Associates LLC | Bartlesville, OK 74006 | Oil & Gas Operator | Dec 2025 |
| 8 | Ra-Jac LLC | Norman, OK 73072 | Oil & Gas Operator | Dec 2025 |
| 9 | Rackley Oil & Gas, LLC | Balko, OK 73931 | Oil & Gas Operator | Nov 2025 |
| 10 | Rainwater A L | Okmulgee, OK 74447 | Oil & Gas Operator | Jan 2013 |
| 11 | Ram Asset Management Co | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2015 |
| 12 | Ramco Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2006 |
| 13 | Ramsey Engineering Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 1993 |
| 14 | Ramsey Nichols Operating Company LLC | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Dec 2025 |
| 15 | Ramsey Property Management LLC | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Nov 2025 |
| 16 | Ramsey Property MGMT Inc | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Mar 2019 |
| 17 | Randall E James Oil Company | Guthrie, OK 73044-9352 | Oil & Gas Operator | Nov 2025 |
| 18 | Randy Inc | Hennessey, OK 73742 | Oil & Gas Operator | Aug 2025 |
| 19 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 20 | Ranken Energy Corporation | Edmond, OK 73013 | Oil & Gas Operator | Nov 2025 |
| 21 | Rapp Oil & Gas | Oklahoma City, OK 73120 | Gas Operator | Jul 2020 |
| 22 | Raw Crude Oil & Gas, L.L.C. | Norman, OK 73069 | Oil & Gas Operator | Nov 2025 |
| 23 | RB Operating Company | Shawnee, OK 74802-1488 | Oil & Gas Operator | Apr 2015 |
| 24 | Rebellion Energy LLC | Tulsa, OK 74135-6241 | Oil & Gas Operator | Jun 2022 |
| 25 | Red Bluff Resources Operating LLC | Oklahoma City, OK 73112-5468 | Oil & Gas Operator | Nov 2025 |
| 26 | Red Eagle Oil Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2005 |
| 27 | Red Fork (USA) Investments Inc | Midland, TX 79710-0272 | Oil & Gas Operator | May 2019 |
| 28 | Red River Royalty Production LLC | Crescent, OK 73028-0608 | Gas Operator | Apr 2021 |
| 29 | Redland Development LLC | Cashion, OK 73016-9625 | Oil & Gas Operator | May 2019 |
| 30 | Redland Resources LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Dec 2025 |
| 31 | Redline Energy LLC | Dover, OK 73734 | Oil & Gas Operator | Dec 2025 |
| 32 | Reed Power Tongs Inc | Seminole, OK 74818 | Oil & Gas Operator | Sep 2025 |
| 33 | Regency Exploration Inc | Oklahoma City, OK 73102-5605 | Oil & Gas Operator | Mar 1999 |
| 34 | Remo Production Co | Stillwater, OK 74074-9333 | Oil Operator | Apr 2014 |
| 35 | Renegade Oil And Gas LLC | Helena, OK 73741-0162 | Oil & Gas Operator | Dec 2019 |
| 36 | Republic Resources Corporation | Oklahoma City, OK 73102-3081 | Oil & Gas Operator | May 2021 |
| 37 | Reserve Acquisition Group | Tulsa, OK 74153 | Oil & Gas Operator | Dec 1993 |
| 38 | Resource Operations Inc | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 39 | Revelation Resources | Cypress, TX 77410-2578 | Oil & Gas Operator | Nov 2025 |
| 40 | Review Oil & Gas Inc | Edmond, OK 73034-7648 | Oil & Gas Operator | Nov 2025 |
| 41 | Revilo Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jul 2021 |
| 42 | Revolution Resources LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jun 2023 |
| 43 | Rhoades Oil Co | Tulsa, OK 74136-5575 | Oil & Gas Operator | Aug 2013 |
| 44 | Rhodes-Fielding Corporation | Oklahoma City, OK 73134 | Oil & Gas Operator | Mar 2025 |
| 45 | Richard Charles J | | Oil & Gas Operator | May 1996 |
| 46 | Richard W Thompson Inc | Plano, TX 75075 | Oil & Gas Operator | Jul 2019 |
| 47 | Ricks Exploration Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 48 | Rietz John T & Co Inc | | Oil & Gas Operator | Mar 1992 |
| 49 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Feb 2026 |
| 50 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 51 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Dec 2025 |
| 52 | Roberson, Joe | Vernon, TX 76385 | Oil & Gas Operator | Feb 2015 |
| 53 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 54 | Roe Oil Company | Cushing, OK 74023-0086 | Oil & Gas Operator | Nov 2025 |
| 55 | Roka Management Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Nov 2025 |
| 56 | Roka Resources Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Sep 2025 |
| 57 | Ron & Dan'S Oil LTD | Barnsdall, OK 74002-0628 | Oil & Gas Operator | May 2011 |
| 58 | Rose Petroleum Corp | Oklahoma City, OK 73146 | Oil & Gas Operator | Feb 2015 |
| 59 | Rox Exploration Inc | Norman, OK 73069-6301 | Oil & Gas Operator | Nov 2025 |
| 60 | RR Oil Well Operations LLC | Ringwood, OK 73768 | Oil & Gas Operator | Dec 2025 |
| 61 | RTB Oil Inc | Crescent, OK 73028-0686 | Oil Operator | May 2016 |
| 62 | Russell D Meloy Oil & Gas Co | Enid, OK 73703-1623 | Oil & Gas Operator | Nov 2025 |
| 63 | Rust Oil Corp. | Fort Worth, TX 76121 | Oil & Gas Operator | Feb 2026 |