| 901 | Western Division Investments Inc | Enid, OK 73701 | Oil & Gas Operator | Jul 2021 |
| 902 | Western Gas Resources Inc | Denver, CO 80202-1955 | Oil & Gas Operator | Dec 2007 |
| 903 | Western Tank Trucks Inc | Hennessey, OK 73742 | Oil Operator | Jul 2011 |
| 904 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Sep 2024 |
| 905 | Wheeler Energy Co. | Tulsa, OK 74101 | Oil & Gas Operator | Sep 2024 |
| 906 | Wheeler Richard Jr | Oklahoma City, OK 73112-8857 | Oil & Gas Operator | Mar 2005 |
| 907 | White Goat Resources LLC | Yukon, OK 73099 | Oil & Gas Operator | Sep 2024 |
| 908 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Nov 2024 |
| 909 | White Star Petroleum LLC | Oklahoma City, OK 73116-7906 | Oil & Gas Operator | Sep 2024 |
| 910 | Whitehead Ross E | Lamont, OK 74643-0326 | Oil & Gas Operator | Nov 2014 |
| 911 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 912 | Wicklund Petroleum Corporation | Naples, FL 34108-0108 | Oil & Gas Operator | Dec 2019 |
| 913 | Wilco Oil & Gas Corporation | Oklahoma City, OK 73159-6229 | Oil & Gas Operator | Dec 2023 |
| 914 | Wildhorse Operating Company | Ardmore, OK 73402 | Oil & Gas Operator | Nov 2024 |
| 915 | Wildwood Operating LLC | Hennessey, OK 73742-7711 | Oil & Gas Operator | Aug 2024 |
| 916 | Williams Roger F | Tulsa, OK 74152-0951 | Oil & Gas Operator | May 2013 |
| 917 | Winston Oil Co | Marietta, OH 45750-754-754 | Oil & Gas Operator | Sep 2024 |
| 918 | Winzeler Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | May 2013 |
| 919 | Withrow Oil Company Inc | Yukon, OK 73099-7712 | Oil & Gas Operator | Apr 2021 |
| 920 | Witty Thomas E | Enid, OK 73703 | Oil & Gas Operator | Mar 2008 |
| 921 | WLW Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Sep 2024 |
| 922 | Wood Fay C Estate | Enid, OK 73703 | Oil & Gas Operator | Jun 2013 |
| 923 | WR Oil & Gas LLC | Plano, TX 75024-3523 | Oil & Gas Operator | Sep 2024 |
| 924 | Wright Jerry L | Crescent, OK 73028-0474 | Oil & Gas Operator | Jun 2013 |
| 925 | Xanadu Exploration Company | Broken Arrow, OK 74014 | Oil & Gas Operator | Sep 2024 |
| 926 | Yarhola Production Company | Drumright, OK 74030 | Oil & Gas Operator | Sep 2024 |
| 927 | Young H Inc | Edmond, OK 73013 | Oil & Gas Operator | Oct 1993 |
| 928 | Zollinger Veldon Inc | Crescent, OK 73028-9280 | Oil & Gas Operator | Nov 2018 |
| 929 | ZP Disposal Systems LLC | Kingfisher, OK 73750 | Oil Operator | Sep 2024 |
| 930 | Zuhone William H | Mattoon, IL 61938-4019 | Oil & Gas Operator | Jan 2015 |