| 1 | R J Operating Company | Albany, TX 76430 | Oil & Gas Operator | May 2026 |
| 2 | R.P.Wilson, Inc. | Stephenville, TX 76401 | Oil & Gas Operator | Jan 2011 |
| 3 | Rampart Petroleum, Incorporated | Buffalo Gap, TX 79508 | Oil & Gas Operator | Jan 2009 |
| 4 | Ratex Energy Inc. | Manchaca, TX 78652 | Oil & Gas Operator | Sep 2002 |
| 5 | Rattlesnake Mountain Oil LLC | Boulder City, NV 89005 | Oil & Gas Operator | Sep 2026 |
| 6 | Ray - A Operating Inc. | Albany, TX 76430 | Oil Operator | Sep 2026 |
| 7 | Raylee Operating Company | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 8 | Red Man Oil, Co. | Albany, TX 76430 | Oil & Gas Operator | Sep 2026 |
| 9 | Red-Tex Energy Services, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Nov 2000 |
| 10 | Red-Tex Petroleum, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Aug 2003 |
| 11 | Reostar Operating Incorporated | Fort Worth, TX 76107 | Oil & Gas Operator | Sep 2012 |
| 12 | Revard Petroleum, L.L.C. | Tulsa, OK 74170 | Oil & Gas Operator | Sep 2026 |
| 13 | Richards, Tot Oil Co. | Abilene, TX 79601 | Oil & Gas Operator | Sep 2026 |
| 14 | Richardson, Bud II | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 15 | Richey, Ray Management Co., Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Sep 2026 |
| 16 | Richland Energy, Inc. | Irving, TX 75063 | Oil & Gas Operator | Sep 2026 |
| 17 | Ridge Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2026 |
| 18 | Ridglea Energy I, LLC | Spring, TX 77379 | Oil & Gas Operator | Sep 2026 |
| 19 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Sep 2026 |
| 20 | Rigged Up, LLC | Graham, TX 76450 | Oil Operator | Sep 2026 |
| 21 | Rister, Dewey | Avoca, TX 79503 | Oil & Gas Operator | Sep 2026 |
| 22 | Ro-Jo, Inc. | Highland VLG, TX 75077 | Oil & Gas Operator | Aug 2003 |
| 23 | Robert C. Brower, LLC | Southlake, TX 76092 | Oil & Gas Operator | Sep 2026 |
| 24 | Robertson Resources, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Sep 2026 |
| 25 | Robuck Petroleum, LLC | Nacogdoches, TX 75965 | Oil & Gas Operator | Sep 2026 |
| 26 | Roco Petroleum, Incorporated | Abilene, TX 79605 | Oil & Gas Operator | Sep 2026 |
| 27 | Rocoso Resources, LLC | Albany, TX 76430 | Oil & Gas Operator | Sep 2026 |
| 28 | Rogers Drilling Co. | Olney, TX 76374 | Oil & Gas Operator | Sep 2026 |
| 29 | Ross Engineering, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Sep 2026 |
| 30 | Rough Hollow Ranch Corporation | Dallas, TX 75209 | Oil Operator | Aug 2006 |
| 31 | Rover Petroleum Operating, LLC | Fort Worth, TX 76101 | Oil & Gas Operator | Sep 2026 |
| 32 | Royal Texan Energy Co. | Irvine, CA 92618 | Oil & Gas Operator | Sep 2026 |
| 33 | Ruff | Albany, TX 76430 | Oil & Gas Operator | Aug 2017 |
| 34 | Ruff Drilling Company | Albany, TX 76430 | Oil & Gas Operator | Dec 2019 |
| 35 | Ruff Oil Co. | Albany, TX 76430 | Oil Operator | Sep 2026 |
| 36 | Russell, T. Operating Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2005 |
| 37 | Rust Oil Corp. | Fort Worth, TX 76121 | Oil & Gas Operator | Sep 2026 |
| 38 | Ruthson Energy, Inc. | Judson, TX 75660 | Oil Operator | Sep 2026 |