| 701 | Ward Gas Marketing Inc | Enid, OK 73702 | Oil & Gas Operator | Sep 2011 |
| 702 | Ward Petroleum Corporation | Enid, OK 73702 | Oil & Gas Operator | Sep 2024 |
| 703 | Washita Oil And Gas, L.L.C. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2015 |
| 704 | Washita Production Company | Tulsa, OK 74136 | Oil & Gas Operator | May 2006 |
| 705 | Weatherly Oil & Gas, LLC | Dallas, TX 75206 | Oil & Gas Operator | Nov 2024 |
| 706 | Weinkauf Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2024 |
| 707 | Wellco Energy Inc | Harrah, OK 73045 | Oil & Gas Operator | Sep 2024 |
| 708 | Western Gas Resources Inc | Denver, CO 80202-1955 | Oil & Gas Operator | Dec 2007 |
| 709 | Western Mountain Resources LLC | Cogan Station, PA 17728 | Oil & Gas Operator | Aug 2024 |
| 710 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Sep 2024 |
| 711 | Westshore Operating Inc | Naples, FL 34109-0549 | Oil & Gas Operator | Dec 2011 |
| 712 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Sep 2024 |
| 713 | Wheatland Oil Inc | Enid, OK 73702-1032 | Oil & Gas Operator | Mar 2015 |
| 714 | Wheeler Energy Co. | Tulsa, OK 74101 | Oil & Gas Operator | Sep 2024 |
| 715 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 716 | Whitmar Exploration Company | Denver, CO 80202 | Oil & Gas Operator | Aug 2024 |
| 717 | Wildwood Operating LLC | Hennessey, OK 73742-7711 | Oil & Gas Operator | Aug 2024 |
| 718 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 719 | WLW Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Sep 2024 |
| 720 | WM KS Energy Resources LLC | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2019 |
| 721 | Wolverine Exploration Company | Houston, TX 77002 | Oil & Gas Operator | May 2019 |
| 722 | Woods Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 723 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Nov 2024 |
| 724 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | Nov 2024 |
| 725 | Yarhola Production Company | Drumright, OK 74030 | Oil & Gas Operator | Sep 2024 |
| 726 | Young Tommy Oil Inc | Woodward, OK 73802-0893 | Oil & Gas Operator | Aug 2024 |
| 727 | Z G Exploration Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 2005 |
| 728 | Zeiders Bros Oil & Gas Co LLC | Edmond, OK 73003 | Oil & Gas Operator | Aug 2024 |
| 729 | Zephyr Operating Co LLC | Oklahoma City, OK 73118-6035 | Oil & Gas Operator | Sep 2024 |
| 730 | Zilkha Energy Company | Houston, TX 77046 | Oil & Gas Operator | Oct 2002 |
| 731 | ZP Disposal Systems LLC | Kingfisher, OK 73750 | Oil Operator | Sep 2024 |