| 1 | R & R Oil & Gas LLC | Mesquite, TX 75150 | Oil & Gas Operator | Jul 2026 |
| 2 | Ram Oil And Gas, Inc. | Walsh, CO 81090 | Oil & Gas Operator | Jul 2026 |
| 3 | Ram Operating Inc. | Browns, IL 62818 | Oil & Gas Operator | Aug 2008 |
| 4 | Ramco Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2006 |
| 5 | Ramco Operating Company | Tulsa, OK 74135 | Oil & Gas Operator | Jan 1998 |
| 6 | Ranger Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Jul 2026 |
| 7 | Raptor Petroleum II, LLC | Houston, TX 77251 | Oil & Gas Operator | Jul 2026 |
| 8 | Raylee Operating Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2026 |
| 9 | Redwine Oil Company | Throckmorton, TX 76483 | Oil & Gas Operator | Jul 2009 |
| 10 | Reef Exploration, Inc. (A-1) | Richardson, TX 75080 | Oil & Gas Operator | Oct 2006 |
| 11 | Reese Wellsite Supervision, LLC | Graham, TX 76450 | Oil & Gas Operator | Jul 2026 |
| 12 | Reliance Operating Company | Midland, TX 79702 | Oil & Gas Operator | Feb 2000 |
| 13 | Renaissance Petroleum Co LLC | Houston, TX 77058 | Oil & Gas Operator | Nov 2011 |
| 14 | Reserve Production, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Mar 2008 |
| 15 | Reynolds, Richard | Seymour, TX 76380 | Oil & Gas Operator | Mar 2008 |
| 16 | Ric Petroleum, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2003 |
| 17 | Richards, Tot Dozer, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | May 2013 |
| 18 | Richards, Tot Oil Co. | Abilene, TX 79601 | Oil & Gas Operator | Jul 2026 |
| 19 | Richardson, Bud II | Graham, TX 76450 | Oil & Gas Operator | Jul 2026 |
| 20 | Richey, Ray Management Co., Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Jul 2026 |
| 21 | Richland Energy, Inc. | Irving, TX 75063 | Oil & Gas Operator | Jul 2026 |
| 22 | Ridge Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2026 |
| 23 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Jul 2026 |
| 24 | Riley Production | Throckmorton, TX 76483 | Oil & Gas Operator | Jul 2026 |
| 25 | Rio Grande Drilling Company | San Antonio, TX 78212 | Oil & Gas Operator | Dec 1999 |
| 26 | Rivercity Operating, Inc. | Austin, TX 78766 | Oil & Gas Operator | Jul 2026 |
| 27 | Roberts & Hammack, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jul 2026 |
| 28 | Robertson Resources, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Jul 2026 |
| 29 | Robuck Petroleum, LLC | Nacogdoches, TX 75965 | Oil & Gas Operator | Jul 2026 |
| 30 | Rodgers, William L. | Fort Worth, TX 76147 | Oil & Gas Operator | Jan 1995 |
| 31 | Rogers Drilling Co. | Olney, TX 76374 | Oil & Gas Operator | Jul 2026 |
| 32 | Roil Operating LLC | Graham, TX 76450 | Oil & Gas Operator | Jul 2026 |
| 33 | Romac Oil Company, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | Jul 2026 |
| 34 | Ross, Dwight M. DRLG. Co., Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 2026 |
| 35 | Ruff Drilling Company | Albany, TX 76430 | Oil & Gas Operator | Dec 2019 |
| 36 | Russell, T. Operating Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2005 |
| 37 | Ruthson Energy, Inc. | Judson, TX 75660 | Oil Operator | Jul 2026 |
| 38 | Rwa, LLC | Boyd, TX 76023 | Oil & Gas Operator | Jul 2026 |
| 39 | Ryder Scott Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2005 |