| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 801 | Wolff'S Oilfield Service | Cushing, OK 74023-9789 | Oil & Gas Operator | Nov 2023 |
| 802 | Wood Fay C Estate | Enid, OK 73703 | Oil & Gas Operator | Jun 2013 |
| 803 | Woodward Iodine Corporation | Woodward, OK 73802-1245 | Oil & Gas Operator | Feb 2024 |
| 804 | World Oil | Oil & Gas Operator | Nov 1998 | |
| 805 | Xanadu Exploration Company | Broken Arrow, OK 74014 | Oil & Gas Operator | Feb 2024 |
| 806 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | Apr 2024 |
| 807 | Yarhola Production Company | Drumright, OK 74030-0693 | Oil & Gas Operator | Jan 2024 |
| 808 | Zephyr Operating Co LLC | Oklahoma City, OK 73118-6035 | Oil & Gas Operator | Jan 2024 |
| 809 | Zimet Brothers Inc | Oil Operator | Mar 2008 | |
| 810 | Zollinger Veldon Inc | Crescent, OK 73028-9280 | Oil & Gas Operator | Nov 2018 |