| 1 | R & S Investments | Tulsa, OK 74146-4743 | Oil Operator | Aug 2013 |
| 2 | R K Petroleum Corp. | Midland, TX 79708 | Oil & Gas Operator | May 2024 |
| 3 | R. K. G. Engineering, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Oct 2025 |
| 4 | R. W. S. Oil Co. | Grandfalls, TX 79742 | Oil & Gas Operator | Oct 2025 |
| 5 | R.K.G. Operations, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Jun 2004 |
| 6 | Rabalais, F.W. Inc. | Fort Worth, TX 76101 | Oil & Gas Operator | Sep 2023 |
| 7 | Raider Oil & Gas Company | MC Camey, TX 79752 | Oil & Gas Operator | Oct 2025 |
| 8 | Railroad Commission Of Texas | Austin, TX 78701 | Oil Operator | Dec 2004 |
| 9 | Rainbow Energy Corporation | Midland, TX 79701 | Oil & Gas Operator | Nov 2002 |
| 10 | Rangeland Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2002 |
| 11 | Rattler Midstream Operating LLC | Midland, TX 79701 | Oil Operator | Oct 2025 |
| 12 | Rayden | Midland, TX 79711 | Oil & Gas Operator | Oct 2025 |
| 13 | RBJ & Associates, LP | Midland, TX 79707 | Oil Operator | Jan 2020 |
| 14 | Reatta Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 15 | Recovery Operating LP | San Angelo, TX 76904 | Oil & Gas Operator | Oct 2025 |
| 16 | Red Stag Energy, LLC | Ozona, TX 76943 | Oil & Gas Operator | Jan 2022 |
| 17 | Red Tail Exploration, LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 18 | Red Willow Production, LLC | Ignacio, CO 81137 | Oil & Gas Operator | Oct 2015 |
| 19 | Redstone Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Jan 2020 |
| 20 | Reeves County Systems, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Aug 2019 |
| 21 | Regency Petroleum Co. Of New Mex | Coppell, TX 75019 | Oil & Gas Operator | Apr 2008 |
| 22 | Rein Pusher Operating LLC | Brenham, TX 77834 | Oil & Gas Operator | Oct 2025 |
| 23 | Reliance Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 24 | Reliance Operating Company | Midland, TX 79702 | Oil & Gas Operator | Feb 2000 |
| 25 | Remnant Oil Operating, LLC | Midland, TX 79704 | Oil & Gas Operator | Jul 2024 |
| 26 | Remuda Operating Company | Midland, TX 79711 | Oil & Gas Operator | Oct 2025 |
| 27 | Rendova Oil Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2002 |
| 28 | Reo Operating LLC | Austin, TX 78747 | Oil & Gas Operator | Oct 2025 |
| 29 | Resaca Operating Company | Houston, TX 77010 | Oil & Gas Operator | Sep 2013 |
| 30 | Reverence Operating LLC | Odessa, TX 79768 | Oil & Gas Operator | Oct 2025 |
| 31 | Revier Resources Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2005 |
| 32 | Rex Energy Operating Corp. | State College, PA 16801 | Oil & Gas Operator | Jun 2012 |
| 33 | Rhonda Operating Company | Midland, TX 79710 | Oil & Gas Operator | Aug 2017 |
| 34 | Riata Energy Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Apr 2008 |
| 35 | Ricks Exploration, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2008 |
| 36 | Riley Production, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 2012 |
| 37 | Rim Operating, Inc. | Englewood, CO 80112 | Oil & Gas Operator | Oct 2025 |
| 38 | Rimrock Production Inc. | Giddings, TX 78942 | Oil & Gas Operator | Oct 2025 |
| 39 | Ring Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 40 | Rio-Tex, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2025 |
| 41 | Rippy Branch Oil Co. | Grandfalls, TX 79742 | Oil & Gas Operator | Apr 2022 |
| 42 | Riptide Energy LLC | Austin, TX 78701 | Oil & Gas Operator | Oct 2025 |
| 43 | Rising Star Energy, L.L.C. | Dallas, TX 75219 | Oil & Gas Operator | Aug 2006 |
| 44 | Rki Exploration & Production LLC | Tulsa, OK 74172 | Oil & Gas Operator | Oct 2025 |
| 45 | Robert C. Brower, LLC | Southlake, TX 76092 | Oil & Gas Operator | Oct 2025 |
| 46 | Robertson Resources, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Oct 2025 |
| 47 | Roca Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 48 | Roca Production, Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Oct 2025 |
| 49 | Roca Resource Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 50 | Roden Oil Company | Midland, TX 79702 | Oil & Gas Operator | Feb 2008 |
| 51 | Roma Oil And Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Oct 2025 |
| 52 | Romine Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 53 | Rosehill Operating Company, LLC | Houston, TX 77084 | Oil & Gas Operator | Sep 2021 |
| 54 | Rover Petroleum Operating, LLC | Fort Worth, TX 76101 | Oil & Gas Operator | Oct 2025 |
| 55 | Royal Texas Petroleum | Lago VIsta, TX 78645 | Oil & Gas Operator | Oct 2025 |
| 56 | Rubicon Oil & Gas, LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 57 | Rudman Partnership, The | Dallas, TX 75201 | Oil & Gas Operator | Dec 2014 |
| 58 | Rust Oil Corp. | Fort Worth, TX 76108 | Oil & Gas Operator | Oct 2025 |
| 59 | Rutherford, Michael A. | Dallas, TX 75381 | Oil & Gas Operator | May 2000 |
| 60 | Ruwco Oil And Gas Corp. | Austin, TX 78701 | Oil & Gas Operator | Aug 2021 |
| 61 | RW Operating Corp. | Midland, TX 79702 | Oil & Gas Operator | Jul 2016 |
| 62 | Ryann Operating, LLC | Waller, TX 77484 | Oil & Gas Operator | Oct 2025 |