| 12101 | Warren, Joe H. | Dallas, TX 75206 | Oil & Gas Operator | Oct 2001 |
| 12102 | Warrior Exploration LLC | Sapulpa, OK 74067-1912 | Oil & Gas Operator | Aug 2025 |
| 12103 | Warrior Resources Inc. | Mexia, TX 76667 | Oil & Gas Operator | Dec 2025 |
| 12104 | Warwick Associates LC | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2025 |
| 12105 | Warwick Oil & Gas, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 1993 |
| 12106 | Warwick-Artemis, LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Dec 2025 |
| 12107 | Wash, Robert C. | Forsan, TX 79733 | Oil & Gas Operator | Nov 2000 |
| 12108 | Wash, Robert C. Inc. | Forsan, TX 79733 | Oil & Gas Operator | Dec 2025 |
| 12109 | Washita Oil And Gas, L.L.C. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2015 |
| 12110 | Washita Production Company | Tulsa, OK 74136 | Oil & Gas Operator | May 2006 |
| 12111 | Waskom, Reagan Operating Company | Boerne, TX 78006 | Gas Operator | Mar 2005 |
| 12112 | Watco Energy | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2025 |
| 12113 | Watco Energy, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Apr 1996 |
| 12114 | Water Works Engineering, Inc. | Rockdale, TX 76567 | Oil & Gas Operator | Jan 1998 |
| 12115 | Waterbridge Texas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 12116 | Waters Eng. & Operating, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Sep 2013 |
| 12117 | Waters Petroleum | Albany, TX 76430 | Oil & Gas Operator | Aug 2016 |
| 12118 | Watkins Production Company | Dallas, TX 75229 | Oil & Gas Operator | Feb 2008 |
| 12119 | Watkins, J. B. | Borger, TX 79007 | Oil & Gas Operator | May 2009 |
| 12120 | Watson Energy Investments, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2025 |
| 12121 | Watson Oil & Gas Co. | Gorman, TX 76454 | Oil & Gas Operator | Jan 2002 |
| 12122 | Watson Oil & Gas, Inc. | Spicewood, TX 78669 | Oil & Gas Operator | Dec 2025 |
| 12123 | Watson Operating Company | Pampa, TX 79066 | Oil & Gas Operator | Dec 2003 |
| 12124 | Watson Packer Employee Fund | Monahans, TX 79756 | Oil & Gas Operator | Dec 2025 |
| 12125 | Watson, B. G. Oil Field Salv Inc | Coleman, TX 76834 | Oil & Gas Operator | Mar 2000 |
| 12126 | Watson, Johnnie A., Inc. | Gorman, TX 76454 | Oil & Gas Operator | Jan 2002 |
| 12127 | Watt Energy, LLC | Port Barre, LA 70577 | Oil & Gas Operator | Dec 2025 |
| 12128 | Watusi Energy LLC | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 12129 | Way, Ralph L., Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 12130 | Wayhan Oil Company | Houston, TX 77070 | Oil & Gas Operator | Dec 2025 |
| 12131 | Wayland Drilling & Explr., Inc. | Grapevine, TX 76099 | Oil & Gas Operator | Apr 2006 |
| 12132 | Waylander LLC | Plano, TX 75025 | Oil & Gas Operator | Dec 2025 |
| 12133 | Waymar Oil & Gas Company | Texarkana, TX 75503 | Oil & Gas Operator | Jan 2007 |
| 12134 | Wayne E. Glenn Associates, Inc. | Dickinson, TX 77539 | Oil & Gas Operator | Jan 2016 |
| 12135 | WB Mullin Operating LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 12136 | WBH Energy Partners LLC | Austin, TX 78703 | Oil & Gas Operator | Dec 2025 |
| 12137 | WBR, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Sep 1995 |
| 12138 | WCS Oil & Gas Corporation | Dallas, TX 75209 | Oil & Gas Operator | Aug 2021 |
| 12139 | WCT Leasing Co. | Austin, TX 78734 | Oil & Gas Operator | Apr 2019 |
| 12140 | WCWB Energy, LLC | Midland, TX 79701 | Oil Operator | Sep 2015 |
| 12141 | Weakland Investments, Inc. | Denver, CO 80215 | Oil & Gas Operator | Dec 2025 |
| 12142 | Weatherly Oil & Gas, LLC | Dallas, TX 75206 | Oil & Gas Operator | Dec 2025 |
| 12143 | Weathers Exploration, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 2025 |
| 12144 | Weatherston, George D. | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2001 |
| 12145 | Weaver & Sharp | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Mar 1997 |
| 12146 | Weaver Global Operating, LLC | Colleyville, TX 76034 | Oil Operator | Dec 2025 |
| 12147 | Weber Energy Corporation | Dallas, TX 75219 | Oil & Gas Operator | Feb 2017 |
| 12148 | Weeks Exploration Company | Houston, TX 77063 | Oil & Gas Operator | Aug 1995 |
| 12149 | Wefco, Inc. | Pampa, TX 79065 | Oil & Gas Operator | May 1993 |
| 12150 | Wehunt Oil Company, Inc. | Dallas, TX 75376 | Oil & Gas Operator | Nov 2002 |
| 12151 | Weibye, Carolyn S. | Houston, TX 77098 | Oil & Gas Operator | Dec 2025 |
| 12152 | Weinkauf Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2025 |
| 12153 | Weinstrom Petroleum | Devine, TX 78016 | Oil & Gas Operator | Dec 2025 |
| 12154 | Weiser-Brown Oil Co | Magnolia, AR 71754 | Oil Operator | Jan 2025 |
| 12155 | Weiser-Brown Operating Company | Magnolia, AR 71754 | Oil & Gas Operator | Dec 2025 |
| 12156 | Weiss Oil Co. | Streator, IL 61364 | Oil & Gas Operator | Dec 1997 |
| 12157 | Wejco, Inc. | Rising Star, TX 76471 | Oil & Gas Operator | Dec 2025 |
| 12158 | Welcome Well Serv. & Boykin Bros | Abilene, TX 79604 | Oil & Gas Operator | Apr 1995 |
| 12159 | Welder Exploration & Prod., Inc. | San Antonio, TX 78212 | Oil & Gas Operator | Dec 2022 |
| 12160 | Welder Operating, Inc. | San Antonio, TX 78205 | Oil & Gas Operator | Mar 2001 |
| 12161 | Welder-Heyer Energy, Inc. | San Antonio, TX 78205 | Oil & Gas Operator | Feb 2001 |
| 12162 | Welderxp LTD. | San Antonio, TX 78212 | Oil & Gas Operator | Dec 2025 |
| 12163 | Weldon Corporation | Houston, TX 77056 | Oil Operator | Feb 2020 |
| 12164 | Welhausen Operating Co., Inc. | Beeville, TX 78104 | Oil & Gas Operator | Aug 2003 |
| 12165 | Welhausen Operating Company, LP | Beeville, TX 78104 | Oil & Gas Operator | Nov 2016 |
| 12166 | Well Recycling Company | Olney, TX 76374 | Oil Operator | Aug 2005 |
| 12167 | Well-Co Solutions, LLC | Batson, TX 77519 | Oil Operator | Dec 2025 |
| 12168 | Wellington Securities, Inc. | Plano, TX 75093 | Gas Operator | Jul 2014 |
| 12169 | Wells Oilfield Services, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 12170 | Wellstar Corporation | Northglenn, CO 80233 | Oil & Gas Operator | Oct 2025 |
| 12171 | Wen-Be | Jourdanton, TX 78026 | Oil & Gas Operator | Dec 2025 |
| 12172 | Wendy Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 12173 | Wenexco, Inc. | Streetman, TX 75859 | Oil & Gas Operator | Dec 2025 |
| 12174 | Wentworth Energy, Inc. | Palestine, TX 75801 | Oil & Gas Operator | Jun 2009 |
| 12175 | Werner Oil, Inc. | Borger, TX 79008 | Oil & Gas Operator | Sep 1996 |
| 12176 | Wernette, Louis J. | Hondo, TX 78861 | Oil & Gas Operator | Sep 2023 |
| 12177 | Wes Pro, Inc. | Jacksboro, TX 76458 | Oil Operator | Jan 2013 |
| 12178 | Wes-Mor Drilling, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 12179 | Wes-Mor Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 1994 |
| 12180 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 12181 | Wes-Tex Oil Co. (I) | Bangs, TX 76823 | Oil & Gas Operator | Dec 2025 |
| 12182 | West Bay Exploration Company | Muenster, TX 76252 | Oil & Gas Operator | Nov 2025 |
| 12183 | West Co., The | Wichita Falls, TX 76307 | Oil & Gas Operator | Jun 2016 |
| 12184 | West Inland Energy, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Dec 2025 |
| 12185 | West Mountain Operating Co, Inc. | Longview, TX 75604 | Oil & Gas Operator | Feb 2019 |
| 12186 | West Oil Resources, LLC | Bertram, TX 78605 | Oil & Gas Operator | Dec 2025 |
| 12187 | West Petroleum Corp. | San Antonio, TX 78205 | Oil & Gas Operator | Oct 2009 |
| 12188 | West Texas Diversified Interests | Eastland, TX 76448 | Oil & Gas Operator | Jun 2006 |
| 12189 | West Texas Exploration Co. | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 12190 | West Texas Oil And Gas Corp. | Houston, TX 77056 | Oil & Gas Operator | Feb 2014 |
| 12191 | West Texas Oil And Gas Oper.,Inc | Houston, TX 77046 | Oil & Gas Operator | Jul 2024 |
| 12192 | West Texas Royalties, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 12193 | West Texas Syndicate LLC. | Corpus Chrsti, TX 78414 | Oil Operator | Dec 2025 |
| 12194 | West Tuleta Operating Corp. | Tuleta, TX 78162 | Oil & Gas Operator | May 2019 |
| 12195 | West, Neva Watkins | Houston, TX 77001 | Oil & Gas Operator | Jul 1997 |
| 12196 | West,Gordon T.Jr. & Rugeley,Stan | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2019 |
| 12197 | West-States Energy, Inc. | Rimrock, AZ 86335 | Oil Operator | Dec 2025 |
| 12198 | Westar Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 2008 |
| 12199 | Westbrook Oil & Gas Co. Inc. | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2025 |
| 12200 | Westco Oil Company | Ozona, TX 76943 | Oil & Gas Operator | Dec 2025 |