| 1 | R & R Operating | Wichita Falls, TX 76307 | Oil & Gas Operator | Jul 2004 |
| 2 | R2Q Operating LLC | Iowa Park, TX 76367 | Oil & Gas Operator | Jul 2025 |
| 3 | Rajoil Inc. | Vernon, TX 76384 | Oil & Gas Operator | Aug 2003 |
| 4 | Ranphil, LLC | Hiltn Head Is, SC 29928 | Oil & Gas Operator | Feb 2016 |
| 5 | Ray Loveless Enterprises, L.L.C. | Kilgore, TX 75663 | Oil Operator | Jul 2025 |
| 6 | Raymond'S Operating, Inc. | Kamay, TX 76369 | Oil & Gas Operator | Jul 2025 |
| 7 | Red River Operating & DRLG. Co. | Electra, TX 76360 | Oil & Gas Operator | Jul 2025 |
| 8 | Redwood Operating, Inc. | Houston, TX 77058 | Oil & Gas Operator | Jul 2025 |
| 9 | Reed, Trace | Bridgeport, TX 76426 | Oil & Gas Operator | Jul 2025 |
| 10 | Renaissance Petroleum Co LLC | Houston, TX 77058 | Oil & Gas Operator | Nov 2011 |
| 11 | Reo Operating LLC | Austin, TX 78747 | Oil & Gas Operator | Jul 2025 |
| 12 | Reynolds, J. C. & W. F. | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 2025 |
| 13 | Ric Petroleum, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2003 |
| 14 | Ro-Jo, Inc. | Highland VLG, TX 75077 | Oil & Gas Operator | Aug 2003 |
| 15 | Roberts & Hammack, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jul 2025 |
| 16 | Robertson, Gene Oil Co. | Burkburnett, TX 76354 | Oil & Gas Operator | Jul 1998 |
| 17 | Rock Creek Oil Co. | Iowa Park, TX 76367 | Oil Operator | Mar 2008 |
| 18 | Rock Hill Operating | Burkburnett, TX 76354 | Oil & Gas Operator | Jul 2025 |
| 19 | Rockstar Production, LLC | Graham, TX 76450 | Oil Operator | Jul 2025 |
| 20 | Rocky Point Oil, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2025 |
| 21 | Rog Enterprises, Inc. | Lake Dallas, TX 75065 | Oil Operator | May 2014 |
| 22 | Rog Enterprises, LLC | Burkburnett, TX 76354 | Oil Operator | Jul 2025 |
| 23 | Roil Mineral & Land Co. | Dallas, TX 75379 | Oil & Gas Operator | Jul 2025 |
| 24 | Romac Oil Company, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | Jul 2025 |
| 25 | Ross, Dwight M. DRLG. Co., Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 2025 |
| 26 | Rover Operating Company, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2025 |
| 27 | Royal Petroleum Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Jul 2025 |
| 28 | RRG Operating, LLC | Odessa, TX 79760 | Oil & Gas Operator | Jul 2025 |
| 29 | Rucker, Gary | Archer City, TX 76351 | Oil & Gas Operator | Dec 2003 |
| 30 | Rush Creek Operating LLC | McKinney, TX 75070 | Oil & Gas Operator | Jul 2025 |
| 31 | Rusk Production Inc. | Iowa Park, TX 76367 | Oil & Gas Operator | Jul 2025 |
| 32 | Rutledge, Rome | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 1997 |
| 33 | Rutledge-Newsom | Graham, TX 76450 | Oil Operator | Jul 2025 |
| 34 | Rwa, LLC | Boyd, TX 76023 | Oil & Gas Operator | Jul 2025 |