| 1 | R & P Operating | Tuscola, TX 79562 | Oil & Gas Operator | Jun 1997 |
| 2 | Radtke, D.E. & Associates, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2004 |
| 3 | Rainey, Wayne | Sweetwater, TX 79556 | Oil & Gas Operator | Feb 2019 |
| 4 | Rampart Petroleum, Incorporated | Buffalo Gap, TX 79508 | Oil & Gas Operator | Jan 2009 |
| 5 | Rand Oil & Gas Corp. | Houston, TX 77040 | Oil & Gas Operator | Apr 2024 |
| 6 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 7 | Ranphil, LLC | Hiltn Head Is, SC 29928 | Oil & Gas Operator | Feb 2016 |
| 8 | Raptor Petroleum II, LLC | Houston, TX 77251 | Oil & Gas Operator | Apr 2024 |
| 9 | Raymond, WM. C. | Rockdale, TX 76567 | Oil & Gas Operator | Apr 2024 |
| 10 | Red Water Resources, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Apr 2024 |
| 11 | Red-Tex Energy Services, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Nov 2000 |
| 12 | Red-Tex Petroleum, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Aug 2003 |
| 13 | Redbud E & P, Inc. | Spring, TX 77379 | Oil & Gas Operator | Apr 2024 |
| 14 | Reflection Energy Search, Inc | Midland, TX 79702 | Oil Operator | Feb 2006 |
| 15 | Regent Oil & Gas Company, L.P. | Dallas, TX 75225 | Oil & Gas Operator | Sep 2006 |
| 16 | Reichmann Petroleum Corp. | Grapevine, TX 76051 | Oil & Gas Operator | Apr 2024 |
| 17 | Rendova Oil Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2002 |
| 18 | RHB Exploration & Production,LLC | Grapevine, TX 76099 | Oil & Gas Operator | Apr 2024 |
| 19 | Richardson, Bud II | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 20 | Richman Petroleum Corp. | Grapevine, TX 76051 | Oil & Gas Operator | Jul 2006 |
| 21 | Riley Production | Throckmorton, TX 76483 | Oil & Gas Operator | Apr 2024 |
| 22 | Rio-Tex, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2024 |
| 23 | RMB Operating LLC | Houston, TX 77269 | Oil & Gas Operator | Apr 2024 |
| 24 | Ro-Jo, Inc. | Highland VLG, TX 75077 | Oil & Gas Operator | Aug 2003 |
| 25 | Robertson Resources, Inc. | Midland, TX 79708 | Oil & Gas Operator | Apr 2024 |
| 26 | Robertson, French M. Oil Co. | Abilene, TX 79608 | Oil & Gas Operator | Mar 1995 |
| 27 | Rodessa Operating Company | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Apr 2024 |
| 28 | Roff Operating Company LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 29 | Rover Petroleum Operating, LLC | Plano, TX 75075 | Oil & Gas Operator | Apr 2024 |
| 30 | Rust Oil Corp. | Fort Worth, TX 76108 | Oil & Gas Operator | Apr 2024 |