| 1 | R & R Operating | Wichita Falls, TX 76307 | Oil & Gas Operator | Jul 2004 |
| 2 | R. J. Oil Co. | Olney, TX 76374 | Oil & Gas Operator | May 2025 |
| 3 | R.J. Riley Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 4 | R2Q Operating LLC | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 5 | Rainwater, John | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 6 | Ramco Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2006 |
| 7 | Ramco Operating Company | Tulsa, OK 74135 | Oil & Gas Operator | Jan 1998 |
| 8 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 9 | Ranger Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 10 | Ratts, Robert V. Inc. | Bedford, TX 76021 | Oil & Gas Operator | Aug 2003 |
| 11 | Raymond'S Operating, Inc. | Kamay, TX 76369 | Oil & Gas Operator | Feb 2026 |
| 12 | Red River Operating & DRLG. Co. | Wylie, TX 75098 | Oil & Gas Operator | Feb 2026 |
| 13 | Redwood Operating, Inc. | Houston, TX 77058 | Oil & Gas Operator | Feb 2026 |
| 14 | Regal Operating | Cisco, TX 76437 | Oil & Gas Operator | Mar 2008 |
| 15 | Regal Petroleum Services | Euless, TX 76039 | Oil & Gas Operator | Aug 2002 |
| 16 | Rehoboth Oil & Gas LLC | Baytown, TX 77521 | Oil Operator | Oct 2011 |
| 17 | Renaissance Petroleum Co LLC | Houston, TX 77058 | Oil & Gas Operator | Nov 2011 |
| 18 | Reneau Oil Co. | Shamrock, TX 79079 | Oil & Gas Operator | Feb 2026 |
| 19 | Reo Operating LLC | Austin, TX 78747 | Oil & Gas Operator | Feb 2026 |
| 20 | Reostar Operating Incorporated | Fort Worth, TX 76107 | Oil & Gas Operator | Sep 2012 |
| 21 | Revier Resources Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2005 |
| 22 | Reynolds, J. C. & W. F. | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 23 | Richland Energy, Inc. | Irving, TX 75063 | Oil & Gas Operator | Feb 2026 |
| 24 | Rife, M. O., Jr. | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 1998 |
| 25 | Riggs Petroleum Company | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 26 | Rio Bravo Production, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 27 | Rio O & P LLC | Pasadena, TX 77504 | Oil Operator | Feb 2026 |
| 28 | RMR Oil Company | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2005 |
| 29 | Robinson Oil Co. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 30 | Rock Creek Oil Co. | Iowa Park, TX 76367 | Oil Operator | Mar 2008 |
| 31 | Rocking, R, Drilling & Prod Co. | Bowie, TX 76230 | Oil & Gas Operator | Feb 2026 |
| 32 | Rocky Point Oil, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 33 | Rodgers, William L. | Fort Worth, TX 76147 | Oil & Gas Operator | Jan 1995 |
| 34 | Rogers Drilling Co. | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |
| 35 | Ropar Operating Co. | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 36 | Roseland Oil & Gas Inc | Rockwall, TX 75087 | Oil & Gas Operator | Feb 2003 |
| 37 | Rover Operating Company, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 38 | Royal Oil LTD. Co. | Hobbs, NM 88241 | Oil & Gas Operator | Mar 1996 |
| 39 | Royal Petroleum Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 40 | Royal Texan Resources Co. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 41 | Royal Texas Petroleum | Lago VIsta, TX 78645 | Oil & Gas Operator | Feb 2026 |
| 42 | Rucker, Gary | Archer City, TX 76351 | Oil & Gas Operator | Dec 2003 |
| 43 | Ruthson Energy, Inc. | Judson, TX 75660 | Oil Operator | Feb 2026 |
| 44 | Rutledge, Rome | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 1997 |
| 45 | Rutledge-Newsom | Graham, TX 76450 | Oil Operator | Jun 2025 |
| 46 | Rwa, LLC | Boyd, TX 76023 | Oil & Gas Operator | Feb 2026 |
| 47 | Ryan, Joseph G. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 48 | Ryder Scott Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2005 |