| 901 | Warren American Oil Company LLC | Tulsa, OK 74147 | Oil & Gas Operator | Dec 2024 |
| 902 | Warren Drilling Co | Dexter City, OH 45727 | Oil & Gas Operator | Dec 2023 |
| 903 | Washita Oil And Gas, L.L.C. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2015 |
| 904 | Watertech Disposal | Enid, OK 73702-0125 | Oil Operator | Sep 2007 |
| 905 | Watertech Disposal LLC | Enid, OK 73702 | Oil Operator | Dec 2011 |
| 906 | Weatherly Oil & Gas, LLC | Dallas, TX 75206 | Oil & Gas Operator | Dec 2024 |
| 907 | Weaver Energy Corporation | Hennessey, OK 73742-1232 | Oil & Gas Operator | Oct 2024 |
| 908 | Wellco Energy Inc | Harrah, OK 73045 | Oil & Gas Operator | Sep 2024 |
| 909 | Wentworth Operating Company | Oklahoma City, OK 73162-1863 | Oil & Gas Operator | Oct 2024 |
| 910 | Western Gas Resources Inc | Denver, CO 80202-1955 | Oil & Gas Operator | Dec 2007 |
| 911 | Western Mountain Resources LLC | Cogan Station, PA 17728 | Oil & Gas Operator | Sep 2024 |
| 912 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Oct 2024 |
| 913 | Western Products Corporation | Fairview, OK 73737 | Oil & Gas Operator | Nov 2004 |
| 914 | Westside Wells Inc | Altus, OK 73522-0077 | Oil & Gas Operator | Nov 2020 |
| 915 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Oct 2024 |
| 916 | Wheatland Oil Inc | Enid, OK 73702-1032 | Oil & Gas Operator | Mar 2015 |
| 917 | Wheeler Energy Co. | Tulsa, OK 74101 | Oil & Gas Operator | Oct 2024 |
| 918 | Wheeler Energy, LLC | Tulsa, OK 74101 | Oil & Gas Operator | Dec 2024 |
| 919 | Whitaker Energy Inc | Humble, TX 77346-1798 | Oil & Gas Operator | Jul 2024 |
| 920 | White Alton L Trust | Nowata, OK 74048 | Oil & Gas Operator | Aug 2013 |
| 921 | White Clarence A | Lawton, OK 73505-4927 | Oil & Gas Operator | Sep 2024 |
| 922 | White Goat Resources LLC | Yukon, OK 73099 | Oil & Gas Operator | Oct 2024 |
| 923 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2024 |
| 924 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 925 | Whitley Oil & Gas Inc | Owasso, OK 74055 | Oil & Gas Operator | Jun 2009 |
| 926 | Whitmar Exploration Company | Denver, CO 80202 | Oil & Gas Operator | Sep 2024 |
| 927 | Whitmar Operating Company | Tulsa, OK 74103-3515 | Oil & Gas Operator | Apr 2009 |
| 928 | Wildhorse Oil & Gas Corporation | Ardmore, OK 73402 | Oil & Gas Operator | May 2019 |
| 929 | Wildwood Operating LLC | Hennessey, OK 73742-7711 | Oil & Gas Operator | Sep 2024 |
| 930 | Will Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Sep 2024 |
| 931 | Wimberley James A | Dallas, TX 75229-6180 | Oil & Gas Operator | Nov 2014 |
| 932 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 933 | Witherspoon O W | | Oil & Gas Operator | Jun 1999 |
| 934 | WLW Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Oct 2024 |
| 935 | WM KS Energy Resources LLC | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2019 |
| 936 | Wolverine Exploration Company | Houston, TX 77002 | Oil & Gas Operator | May 2019 |
| 937 | Wood Fay C Estate | Enid, OK 73703 | Oil & Gas Operator | Jun 2013 |
| 938 | Woods Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 939 | WR Oil & Gas LLC | Plano, TX 75024-3523 | Oil & Gas Operator | Sep 2024 |
| 940 | Wyant & O'Keefe | Santa Fe, NM 87501 | Oil & Gas Operator | May 2006 |
| 941 | Wynn-Crosby Operating LP | Dallas, TX 75201 | Oil & Gas Operator | Sep 2024 |
| 942 | Xae Corporation | Norman, OK 73072 | Oil & Gas Operator | Apr 2021 |
| 943 | Xanadu Exploration Company | Broken Arrow, OK 74014 | Oil & Gas Operator | Oct 2024 |
| 944 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Dec 2024 |
| 945 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | Oct 2024 |
| 946 | Zephyr Operating Co LLC | Oklahoma City, OK 73118-6035 | Oil & Gas Operator | Sep 2024 |
| 947 | Zollinger Veldon Inc | Crescent, OK 73028-9280 | Oil & Gas Operator | Nov 2018 |