| 701 | Wheeler Energy Co. | Tulsa, OK 74101 | Oil & Gas Operator | Jan 2024 |
| 702 | Wheeler Energy, LLC | Tulsa, OK 74101 | Oil & Gas Operator | Apr 2024 |
| 703 | White Goat Resources LLC | | Oil & Gas Operator | Feb 2024 |
| 704 | White Stone LLC | Waynoka, OK 73860-4801 | Oil & Gas Operator | Feb 2024 |
| 705 | Whiteman Industries, Inc. | Oklahoma City, OK 73101 | Oil & Gas Operator | Jan 2024 |
| 706 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 707 | Will Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jan 2024 |
| 708 | Williford Energy Company | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2024 |
| 709 | Wilson Operating Company LLC | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2024 |
| 710 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 711 | Windward Development LLC | Tulsa, OK 74136-7007 | Oil & Gas Operator | Jul 2019 |
| 712 | Wolverine Exploration Company | Houston, TX 77002 | Oil & Gas Operator | May 2019 |
| 713 | Woodward Iodine Corporation | Woodward, OK 73802-1245 | Oil & Gas Operator | Feb 2024 |
| 714 | Xeric Oil & Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2014 |
| 715 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Apr 2024 |
| 716 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | Apr 2024 |
| 717 | Young Tommy Oil Inc | Woodward, OK 73802-0893 | Oil & Gas Operator | Jan 2024 |
| 718 | Z G Operating LLC | Oklahoma City, OK 73134-5038 | Oil & Gas Operator | Nov 2009 |
| 719 | Z G Exploration Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 2005 |
| 720 | Zenith Oil & Gas, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jan 2024 |
| 721 | Zephyr Operating Co LLC | Oklahoma City, OK 73118-6035 | Oil & Gas Operator | Jan 2024 |
| 722 | Zilkha Energy Company | Houston, TX 77046 | Oil & Gas Operator | Oct 2002 |
| 723 | Zimet Brothers Inc | | Oil Operator | Mar 2008 |
| 724 | Zimtex Energy LLC | | Oil & Gas Operator | Nov 2017 |