| 1 | R & P Operating | Tuscola, TX 79562 | Oil & Gas Operator | Jun 1997 |
| 2 | Rainey, Wayne | Sweetwater, TX 79556 | Oil & Gas Operator | Feb 2019 |
| 3 | Ranger Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 4 | Ratex Energy Inc. | Manchaca, TX 78652 | Oil & Gas Operator | Sep 2002 |
| 5 | Rayco Operating, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 6 | Raymond, WM. C. | Rockdale, TX 76567 | Oil & Gas Operator | Oct 2025 |
| 7 | RBD-Shelby Agency | Dallas, TX 75283 | Oil & Gas Operator | Dec 1993 |
| 8 | Rci, L.L.C. | Abilene, TX 79606 | Oil & Gas Operator | Oct 2025 |
| 9 | Red Rock Resources, L.L.C. | Wichita Falls, TX 76310 | Oil & Gas Operator | Jun 2025 |
| 10 | Red-Tex Petroleum, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Aug 2003 |
| 11 | Reef Exploration, Inc. (A-1) | Richardson, TX 75080 | Oil & Gas Operator | Oct 2006 |
| 12 | Reilly, K. L. | Huntsville, TX 77342 | Oil Operator | Dec 2004 |
| 13 | Reliance Oil And Gas, Inc. | Austin, TX 78748 | Oil Operator | Jun 2012 |
| 14 | Renegade Operating Company, LLC | Abilene, TX 79608 | Oil Operator | Oct 2006 |
| 15 | Revard Petroleum, L.L.C. | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2025 |
| 16 | Rexcom, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2025 |
| 17 | RHB Exploration & Production,LLC | Grapevine, TX 76099 | Oil & Gas Operator | Oct 2025 |
| 18 | Rhodes Drilling Company | Abilene, TX 79608 | Oil & Gas Operator | Sep 2000 |
| 19 | Rhonda Operating Company | Midland, TX 79710 | Oil & Gas Operator | Aug 2017 |
| 20 | Richey, Ray Management Co., Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Oct 2025 |
| 21 | Rister, Dewey | Avoca, TX 79503 | Oil & Gas Operator | Oct 2025 |
| 22 | RMB Operating LLC | Lubbock, TX 79493 | Oil & Gas Operator | Oct 2025 |
| 23 | Ro-Jo, Inc. | Highland VLG, TX 75077 | Oil & Gas Operator | Aug 2003 |
| 24 | Robertson Resources, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Oct 2025 |
| 25 | Robertson, French M. Oil Co. | Abilene, TX 79608 | Oil & Gas Operator | Mar 1995 |
| 26 | Robinson Operating Company | Abilene, TX 79604 | Oil & Gas Operator | Aug 2012 |
| 27 | Rockwood Resources Inc | Coleman, TX 76834 | Oil & Gas Operator | Oct 2025 |
| 28 | Roco Petroleum, Incorporated | Abilene, TX 79605 | Oil & Gas Operator | Oct 2025 |
| 29 | Romac Oil Company, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | Oct 2025 |
| 30 | Ross Engineering, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Oct 2025 |
| 31 | Rover Petroleum Operating, LLC | Fort Worth, TX 76101 | Oil & Gas Operator | Oct 2025 |
| 32 | Royal Oil & Gas Corp. | Indiana, PA 15701 | Oil & Gas Operator | Apr 2014 |
| 33 | Royal Texan Energy Co. | Irvine, CA 92618 | Oil & Gas Operator | Oct 2025 |
| 34 | Royal Texan Resources Co. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 35 | Royal Texas Petroleum | Lago VIsta, TX 78645 | Oil & Gas Operator | Oct 2025 |
| 36 | Rush Creek Operating LLC | McKinney, TX 75070 | Oil & Gas Operator | Oct 2025 |
| 37 | Russell, T. Operating Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2005 |
| 38 | Rust Oil Corp. | Fort Worth, TX 76108 | Oil & Gas Operator | Oct 2025 |
| 39 | RVR Operating Co. | Bedford, TX 76021 | Oil & Gas Operator | Jan 2017 |
| 40 | RWJ Operating LLC | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |