| 1 | R & A Moore, Inc. | Cleburne, TX 76033 | Oil & Gas Operator | Sep 2026 |
| 2 | R & B Trucking | Crescent, OK 73028-0775 | Oil & Gas Operator | Nov 2021 |
| 3 | R & L Properties Inc | Richmond, MO 64085-0228 | Oil & Gas Operator | Apr 2001 |
| 4 | R & N Associates | Grapevine, TX 76051 | Oil & Gas Operator | Feb 2025 |
| 5 | R & N Oil Company | Fairfax, OK 74637 | Oil & Gas Operator | May 2013 |
| 6 | Ra-Jac LLC | Norman, OK 73069 | Oil & Gas Operator | Jun 2026 |
| 7 | Raf Oil Company | Oklahoma City, OK 73120-1944 | Oil & Gas Operator | Jul 2013 |
| 8 | Ram Asset Management Co | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2015 |
| 9 | Ramco Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2006 |
| 10 | Ramco Oil Company | Pawhuska, OK 74056 | Oil & Gas Operator | Feb 2012 |
| 11 | Ramsey Property MGMT Inc | Oklahoma City, OK 73120-1955 | Oil & Gas Operator | Mar 2019 |
| 12 | Randy Inc | Hennessey, OK 73742 | Oil & Gas Operator | May 2026 |
| 13 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 14 | Range Production Company, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2026 |
| 15 | Rasmussen, Hal J. Operating, Inc | Midland, TX 79701 | Oil & Gas Operator | Apr 2009 |
| 16 | Raven Resources LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | May 2026 |
| 17 | Raw Crude Oil & Gas, L.L.C. | Norman, OK 73069 | Oil & Gas Operator | May 2026 |
| 18 | RB Operating Company | Shawnee, OK 74802-1488 | Oil & Gas Operator | Apr 2015 |
| 19 | Reading & Bates Petroleum Co | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2009 |
| 20 | Rebellion Energy LLC | Tulsa, OK 74135-6241 | Oil & Gas Operator | Jun 2022 |
| 21 | Red Bluff Resources Operating LLC | Oklahoma City, OK 73112-5468 | Oil & Gas Operator | May 2026 |
| 22 | Red Eagle Oil Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2005 |
| 23 | Red Hawk Disposal LLC | Oklahoma City, OK 73172 | Oil Operator | Jun 2023 |
| 24 | Red Plains Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Oct 2017 |
| 25 | Red Rock Resources, L.L.C. | Wichita Falls, TX 76310 | Oil & Gas Operator | Apr 2026 |
| 26 | Redfork Operations LLC | Dover, OK 73734 | Oil & Gas Operator | Jun 2026 |
| 27 | Redland Resources LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Jun 2026 |
| 28 | Redline Energy LLC | Dover, OK 73734 | Oil & Gas Operator | Jun 2026 |
| 29 | Regency Exploration Inc | Oklahoma City, OK 73102-5605 | Oil & Gas Operator | Mar 1999 |
| 30 | Republic Resources Corporation | Oklahoma City, OK 73102-3081 | Oil & Gas Operator | May 2021 |
| 31 | Revelation Resources | Cypress, TX 77410-2578 | Oil & Gas Operator | May 2026 |
| 32 | Review Oil & Gas Inc | Edmond, OK 73034-7648 | Oil & Gas Operator | May 2026 |
| 33 | Revolution Resources LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jun 2023 |
| 34 | Rhoades Oil Co | Tulsa, OK 74136-5575 | Oil & Gas Operator | Aug 2013 |
| 35 | Richard Charles J | | Oil & Gas Operator | May 1996 |
| 36 | Ricks Expl Acquisition LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2013 |
| 37 | Ricks Exploration Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 38 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Sep 2026 |
| 39 | Rio Blanco Operating LLC | Victoria, TX 77904 | Oil & Gas Operator | May 2026 |
| 40 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2026 |
| 41 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Jun 2026 |
| 42 | Roan Resources LLC | Tulsa, OK 74103-3729 | Oil & Gas Operator | May 2026 |
| 43 | Robinowitz Oil Company | Tulsa, OK 74136-1429 | Oil & Gas Operator | Feb 2023 |
| 44 | Rocky Roads Operating LLC | Tulsa, OK 74103-4048 | Oil & Gas Operator | Jun 2026 |
| 45 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 46 | Roka Resources Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | May 2026 |
| 47 | Ronan Company | Springfield, MO 65704 | Oil & Gas Operator | Aug 2013 |
| 48 | Rose Petroleum Corp | Oklahoma City, OK 73146 | Oil & Gas Operator | Feb 2015 |
| 49 | Ross Curtis | Ada, OK 74820-1354 | Oil & Gas Operator | Feb 2012 |
| 50 | Rowe Stephen Oil Properties LLC | Hunt, TX 78024 | Oil & Gas Operator | Apr 2020 |
| 51 | Rox Exploration Inc | Norman, OK 73069-6301 | Oil & Gas Operator | Jun 2026 |
| 52 | Royalty Energy Development LLC | Edmond, OK 73003 | Oil & Gas Operator | Jun 2026 |
| 53 | RR Oil Well Operations LLC | Ringwood, OK 73768 | Oil & Gas Operator | Jun 2026 |
| 54 | RTC Resources, LLP | Weatherford, OK 73096 | Oil & Gas Operator | Sep 2026 |
| 55 | Russell D Meloy Oil & Gas Co | Enid, OK 73703-1623 | Oil & Gas Operator | May 2026 |
| 56 | Ryan Petroleum Corp | Oklahoma City, OK 73102-9024 | Oil & Gas Operator | Aug 1994 |