| 1 | R & C Petroleum, Inc. | Flint, TX 75762 | Oil & Gas Operator | Mar 2025 |
| 2 | R2Q Operating LLC | Iowa Park, TX 76367 | Oil & Gas Operator | Mar 2025 |
| 3 | Ranger Investments, Inc. | Longview, TX 75605 | Oil & Gas Operator | Oct 2006 |
| 4 | Redwood Oil & Gas | McKinney, TX 75070 | Oil & Gas Operator | Apr 2013 |
| 5 | Refuge Properties, LLC | Longview, TX 75608 | Oil Operator | Mar 2025 |
| 6 | Remuda Operating Company | Midland, TX 79711 | Oil & Gas Operator | Mar 2025 |
| 7 | Reo Operating LLC | Austin, TX 78747 | Oil & Gas Operator | Mar 2025 |
| 8 | Reostar Operating Incorporated | Fort Worth, TX 76107 | Oil & Gas Operator | Sep 2012 |
| 9 | Reserve Management, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Mar 2025 |
| 10 | Reserve Production, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Mar 2008 |
| 11 | Reynolds Drilling Co., Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Mar 2025 |
| 12 | Reynolds E & P, Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Mar 2025 |
| 13 | Rheata Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2025 |
| 14 | Richter Operating Company | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2007 |
| 15 | Rig Runner Express Inc Of Texas | Kilgore, TX 75663 | Oil & Gas Operator | May 2014 |
| 16 | Rig Runner Express, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Mar 2008 |
| 17 | Riverine, L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2021 |
| 18 | RLM Energy Company Inc. | Monroe, LA 71201 | Oil & Gas Operator | Mar 2008 |
| 19 | Rme Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2016 |
| 20 | Rmor Production | Kilgore, TX 75662 | Oil Operator | Mar 2025 |
| 21 | Roach, R. Byron Trustee | Judson, TX 75660 | Oil & Gas Operator | Mar 1999 |
| 22 | Robbins Petroleum Corp. | Longview, TX 75606 | Oil & Gas Operator | Sep 1994 |
| 23 | Robertson Resources, Inc. | Midland, TX 79708 | Oil & Gas Operator | Mar 2025 |
| 24 | Robertson-Bryce Management, LLC | Tyler, TX 75701 | Oil & Gas Operator | Mar 2025 |
| 25 | Robinett Resources Inc. | Longview, TX 75601 | Oil & Gas Operator | Dec 1999 |
| 26 | Rockcliff Energy Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 27 | Rojo Burro Petroleo & Gas | Kilgore, TX 75662 | Oil & Gas Operator | Aug 2007 |
| 28 | Roosth & Genecov Production Co. | Tyler, TX 75710 | Oil & Gas Operator | Aug 2003 |
| 29 | Roosth Production Co. | Tyler, TX 75711 | Oil & Gas Operator | Mar 2025 |
| 30 | Royal Petroleum Corp. | Dallas, TX 75229 | Oil & Gas Operator | Jan 2025 |
| 31 | Rusk Co. Well Service Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2025 |
| 32 | Russell - FT. Trinidad Op., LLC | Tyler, TX 75710 | Oil & Gas Operator | Mar 2025 |
| 33 | RWS Operating Co. LLC | Kilgore, TX 75663 | Oil Operator | Mar 2025 |