| 1101 | Swanner Properties | Wichita Falls, TX 76309 | Oil & Gas Operator | Jun 2026 |
| 1102 | Swanson & Vestal | Electra, TX 76360 | Oil & Gas Operator | Oct 1997 |
| 1103 | Swanson Operating, Inc. | Holliday, TX 76366 | Oil Operator | Jun 2026 |
| 1104 | Swanson, Tom | Electra, TX 76360 | Oil & Gas Operator | Oct 2004 |
| 1105 | Swanson, Tommy Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Mar 2017 |
| 1106 | Swaringin, Howard Operating | Maryneal, TX 79535 | Oil & Gas Operator | May 2003 |
| 1107 | Swartz Oil Company | San Angelo, TX 76906 | Oil & Gas Operator | Jun 2026 |
| 1108 | Swartz, Guy A. | San Angelo, TX 76904 | Oil & Gas Operator | Aug 1993 |
| 1109 | Sweet Crude Operating LLC | Brenham, TX 77834 | Oil & Gas Operator | Jun 2026 |
| 1110 | Sweet Texas T Energy LLC | Clyde, TX 79510 | Oil Operator | Jun 2026 |
| 1111 | Sweetwater Drilling Co., Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Jun 2026 |
| 1112 | Sweetwater Production, Inc. | Abilene, TX 79602 | Oil & Gas Operator | Jun 2026 |
| 1113 | Swenson Backhoe Service, Inc. | Electra, TX 76360 | Oil Operator | Jun 2026 |
| 1114 | Swenson, Clifford E. | Henrietta, TX 76365 | Oil & Gas Operator | Jun 2026 |
| 1115 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 1116 | Swiess & Thomas | San Antonio, TX 78247 | Oil Operator | Jun 2026 |
| 1117 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 1118 | Swift Energy Operating, LLC | Houston, TX 77079 | Oil & Gas Operator | Jun 2017 |
| 1119 | SWJN Oil Company | Kilgore, TX 75663 | Oil Operator | Jun 2026 |
| 1120 | SWN Production Company, LLC | Spring, TX 77391 | Oil & Gas Operator | Dec 2025 |
| 1121 | SWN Production LLC | Spring, TX 77389-4954 | Oil & Gas Operator | Feb 2022 |
| 1122 | Swope Corp. | Austin, TX 78735 | Oil & Gas Operator | Jun 2026 |
| 1123 | Swordfish Energy Operating, LLC | Houston, TX 77060 | Oil & Gas Operator | Jun 2026 |
| 1124 | SWS | Humble, TX 77338 | Oil Operator | Jun 2026 |
| 1125 | Sydri Operating, LLC | Dallas, TX 75231 | Oil & Gas Operator | Jun 2026 |
| 1126 | Sydson Energy, Inc. | Houston, TX 77019 | Oil & Gas Operator | Jun 2026 |
| 1127 | Syj Oil & Gas | San Antonio, TX 78209 | Oil Operator | Sep 2000 |
| 1128 | Syj Oil & Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jun 2026 |
| 1129 | Sylvan Energy, LLC | Pittsburgh, PA 15211 | Oil & Gas Operator | Jun 2026 |
| 1130 | Symank, Steve | Olney, TX 76374 | Oil & Gas Operator | Jun 2026 |
| 1131 | Symba American Oil, Inc | Houston, TX 77056 | Oil Operator | Jun 2026 |
| 1132 | Synergex Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Feb 2026 |
| 1133 | Synergy Oil & Gas, Inc. (A) | Houston, TX 77024 | Oil & Gas Operator | Aug 2001 |
| 1134 | Synergy Oil & Gas, L.P. | Houston, TX 77024 | Oil & Gas Operator | May 2012 |
| 1135 | Synergy Operating Co., LLC | Dallas, TX 75225 | Oil & Gas Operator | Apr 2026 |
| 1136 | Synergy Production Company | Houston, TX 77024 | Oil & Gas Operator | Jan 1996 |
| 1137 | Syntax Energy Corporation | Denton, TX 76210 | Oil Operator | Jun 2026 |
| 1138 | Synthetic Energy Corporation | Houston, TX 77006 | Oil Operator | Jun 2026 |