| 1101 | Westport Oil & Gas Company LP | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2007 |
| 1102 | Westridge Oil & Gas Properties | Mineral Wells, TX 76068 | Oil & Gas Operator | Oct 2025 |
| 1103 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Jul 2025 |
| 1104 | Westwin Energy I, LP | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 1105 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Oct 2025 |
| 1106 | White'S Industrial Engine'S | Houston, TX 77070 | Oil & Gas Operator | Oct 2025 |
| 1107 | White, Ralph H. | Midland, TX 79701 | Oil & Gas Operator | Oct 2002 |
| 1108 | Whitemound Oil Company | FT Stockton, TX 79735 | Oil & Gas Operator | Jan 2017 |
| 1109 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 1110 | Wilbanks, Bruce A. | Midland, TX 79701 | Oil & Gas Operator | Aug 1996 |
| 1111 | Wilbanks, Bruce A. Company | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 1112 | Wild Cat Operating Company | Victoria, TX 77903 | Oil & Gas Operator | Mar 2008 |
| 1113 | Williams Oil Company | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 1114 | Williams, Clayton Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Oct 2025 |
| 1115 | Wilshire Oil Co. Of Texas | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2004 |
| 1116 | Wilson Brothers Leasing Co., Inc | Midland, TX 79705 | Oil & Gas Operator | Mar 2015 |
| 1117 | Wilson, W. Corp. | Midland, TX 79705 | Oil & Gas Operator | Mar 1999 |
| 1118 | Wilson, WM. B. Exploration Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 1996 |
| 1119 | Wilton Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Apr 1999 |
| 1120 | Winchester Energy, LLC | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 1121 | Wineridge Inc. | Austin, TX 78747 | Oil Operator | Oct 2025 |
| 1122 | Wiseman, B. W., Jr. | Midland, TX 79702 | Oil & Gas Operator | Dec 2002 |
| 1123 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 1124 | WJC, Inc. | Post, TX 79356 | Oil & Gas Operator | Oct 2025 |
| 1125 | Wolf Energy | Midland, TX 79701 | Oil & Gas Operator | Jan 1995 |
| 1126 | Wolf Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2021 |
| 1127 | Wood, McShane & Thams | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 1128 | Woodbine Petroleum, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Aug 2003 |
| 1129 | WPX Energy Permian, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 2025 |
| 1130 | WTG Exploration | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 1131 | WTG Exploration Inc | Midland, TX 79705 | Oil & Gas Operator | Dec 2023 |
| 1132 | Wyatt Permian, LLC | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Oct 2025 |
| 1133 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 1134 | Xeric Oil & Gas Company | Midland, TX 79702 | Oil & Gas Operator | Jul 1997 |
| 1135 | Xeric Oil & Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2014 |
| 1136 | Xhorizons Energy LLC | Houston, TX 77079 | Oil Operator | Oct 2025 |
| 1137 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 1138 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Oct 2025 |
| 1139 | Yates Drilling Company | Artesia, NM 88210 | Oil & Gas Operator | Dec 2021 |
| 1140 | Yates, Harvey E. Company | Roswell, NM 88201 | Oil & Gas Operator | Dec 2002 |
| 1141 | Young Marshall R Oil Co | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2011 |
| 1142 | Younger Energy Company | Wichita, KS 67206 | Oil & Gas Operator | Oct 2025 |
| 1143 | Zachry Oil And Gas Properties | Midland, TX 79708 | Oil & Gas Operator | Oct 2025 |