| 1 | R K Petroleum Corp. | Midland, TX 79708 | Oil & Gas Operator | May 2024 |
| 2 | Railroad Commission Of Texas | Austin, TX 78701 | Oil Operator | Dec 2004 |
| 3 | Ram Energy LLC | Tulsa, OK 74152 | Oil & Gas Operator | Jun 2025 |
| 4 | Ram Operating Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Sep 2012 |
| 5 | Ram Operating Inc. | Browns, IL 62818 | Oil & Gas Operator | Aug 2008 |
| 6 | Rampart Petroleum, Incorporated | Buffalo Gap, TX 79508 | Oil & Gas Operator | Jan 2009 |
| 7 | Ramtex Energy LLC | Tulsa, OK 74114 | Oil & Gas Operator | Sep 2025 |
| 8 | Randa Operating, Inc. | Big Lake, TX 76932 | Oil Operator | Sep 2025 |
| 9 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 10 | Raptor Resources, Inc. | Austin, TX 78701 | Oil & Gas Operator | Sep 2025 |
| 11 | Rasmussen, Tom | San Angelo, TX 76904 | Oil & Gas Operator | Sep 2025 |
| 12 | Rattler Midstream Operating LLC | Midland, TX 79701 | Oil Operator | Sep 2025 |
| 13 | RBJ & Associates, LP | Midland, TX 79707 | Oil Operator | Jan 2020 |
| 14 | Reatta Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 15 | Recovery Operating LP | San Angelo, TX 76904 | Oil & Gas Operator | Sep 2025 |
| 16 | Red Sand Resources LLC | Ada, OK 74821 | Oil Operator | May 2025 |
| 17 | Red Tail Exploration, LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 18 | Red Tank Resources, LLC | Dallas, TX 75379 | Oil & Gas Operator | Sep 2025 |
| 19 | Reddirt Operating, LLC. | Midland, TX 79704 | Oil & Gas Operator | Sep 2025 |
| 20 | Regions Energy LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2016 |
| 21 | Regions Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 22 | Rein Pusher Operating LLC | Brenham, TX 77834 | Oil & Gas Operator | Sep 2025 |
| 23 | Reliance Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 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 | Sep 2025 |
| 27 | Reverence Operating LLC | Odessa, TX 79768 | Oil & Gas Operator | Sep 2025 |
| 28 | Rex Energy Operating Corp. | State College, PA 16801 | Oil & Gas Operator | Jun 2012 |
| 29 | Rhonda Operating Company | Midland, TX 79710 | Oil & Gas Operator | Aug 2017 |
| 30 | RHR Oil & Gas, LLC | Fort Worth, TX 76107 | Oil Operator | Sep 2025 |
| 31 | Riata Energy Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Apr 2008 |
| 32 | Richman Petroleum Corp. | Grapevine, TX 76051 | Oil & Gas Operator | Jul 2006 |
| 33 | Ricks Exploration, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2008 |
| 34 | Ridgeline Resources, LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 35 | Rising Star Energy, L.L.C. | Dallas, TX 75219 | Oil & Gas Operator | Aug 2006 |
| 36 | Rittenhouse Oil & Gas Co. | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 37 | Rme Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2016 |
| 38 | Robby Kohutek, Inc. | Ballinger, TX 76821 | Oil & Gas Operator | Sep 2025 |
| 39 | Robert C. Brower, LLC | Southlake, TX 76092 | Oil & Gas Operator | Sep 2025 |
| 40 | Roberts & Hammack, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2025 |
| 41 | Robertson Resources, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Sep 2025 |
| 42 | Roc Operating, Inc. | Plano, TX 75093 | Oil & Gas Operator | Oct 2008 |
| 43 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Sep 2025 |
| 44 | Rover Petroleum Operating, LLC | Plano, TX 75075 | Oil & Gas Operator | Sep 2025 |
| 45 | RP Operating, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Sep 2025 |
| 46 | RRP Operating LLC | Houston, TX 77046 | Oil & Gas Operator | Sep 2025 |
| 47 | Russell Operating Company, LLC | Big Lake, TX 76932 | Oil Operator | Sep 2025 |
| 48 | Rwa, LLC | Boyd, TX 76023 | Oil & Gas Operator | Sep 2025 |