| 101 | R K Petroleum Corp. | Midland, TX 79708 | Oil & Gas Operator | May 2024 |
| 102 | Reatta Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 103 | Remuda Operating Company | Midland, TX 79711 | Oil & Gas Operator | Sep 2026 |
| 104 | RHB Exploration & Production,LLC | Grapevine, TX 76099 | Oil & Gas Operator | Sep 2026 |
| 105 | Ridglea Energy I, LLC | Spring, TX 77379 | Oil & Gas Operator | Sep 2026 |
| 106 | Rki Exploration & Production LLC | Tulsa, OK 74172 | Oil & Gas Operator | Sep 2026 |
| 107 | Ross, Dwight M. DRLG. Co., Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Sep 2026 |
| 108 | Rust Oil Corp. | Fort Worth, TX 76121 | Oil & Gas Operator | Sep 2026 |
| 109 | S & J Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2015 |
| 110 | Salida Exploration, LLC | Abilene, TX 79603 | Oil & Gas Operator | Sep 2026 |
| 111 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 112 | Samson Lone Star LP | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2007 |
| 113 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | May 2026 |
| 114 | Sauder Management Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2026 |
| 115 | Sbog, LLC | Granbury, TX 76048 | Oil & Gas Operator | Feb 2021 |
| 116 | Schalk Oil Company, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2026 |
| 117 | Schalk, Thomas S. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 1995 |
| 118 | Sharp Image Energy, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Sep 2026 |
| 119 | Siete Oil And Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 120 | Single Barrel Oil And Gas LLC | Granbury, TX 76048 | Oil & Gas Operator | Sep 2026 |
| 121 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | Sep 2026 |
| 122 | Sojourner Drilling Corporation | Abilene, TX 79604 | Oil & Gas Operator | Sep 2026 |
| 123 | Solar Exploration TX LLC | Tulsa, OK 74133 | Oil Operator | Dec 2018 |
| 124 | SRG Oil Corporation | Abilene, TX 79604 | Oil & Gas Operator | Apr 1994 |
| 125 | SSC, Inc. | Lubbock, TX 79408 | Oil & Gas Operator | Sep 2026 |
| 126 | Stovall Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 127 | Sullivan, Hollis R. Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2009 |
| 128 | T & G Energy LLC | Dallas, TX 75230 | Oil Operator | Nov 2010 |
| 129 | Taylor Oil & Gas Serv | Snyder, TX 79549 | Oil Operator | Sep 2026 |
| 130 | Taylor, J. S. Inc. | Lewisville, TX 75057 | Oil & Gas Operator | Sep 2026 |
| 131 | Texland Petroleum Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2003 |
| 132 | Texland Petroleum, L.P. | Fort Worth, TX 76107 | Oil & Gas Operator | Sep 2026 |
| 133 | Texland-Rector & Schumacher | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2000 |
| 134 | TKP Petroleum, Inc. | Lubbock, TX 79464 | Oil & Gas Operator | Sep 2026 |
| 135 | Trend Exploration Company | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 136 | Trio Consulting & Management,LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2026 |
| 137 | Triumph Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 138 | VX Operating, LLC | Abilene, TX 79605 | Oil & Gas Operator | Sep 2026 |
| 139 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 140 | Western Reserves Corporation | Abilene, TX 79608 | Oil & Gas Operator | Jan 2008 |
| 141 | Woods Operating Co., Inc. | Shreveport, LA 71136 | Oil & Gas Operator | Dec 2020 |
| 142 | WPX Energy Permian, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2026 |