| 1 | W S Crude Oil Purchasing Inc | Oklahoma City, OK 73129-7613 | Oil & Gas Operator | May 2008 |
| 2 | Waddell Norman | Seminole, OK 74868-1244 | Oil & Gas Operator | Nov 1998 |
| 3 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 4 | Walker Keith F | Ardmore, OK 73401 | Oil & Gas Operator | Jan 2019 |
| 5 | Ward Oil Co. | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 6 | Ward Petroleum Corporation | Enid, OK 73702 | Oil & Gas Operator | Jun 2025 |
| 7 | Ware Jimmy M | Seminole, OK 74868 | Oil & Gas Operator | Nov 1998 |
| 8 | Warren American Oil Company LLC | Tulsa, OK 74147 | Oil & Gas Operator | Oct 2025 |
| 9 | Watkins J L | Henryetta, OK 74437 | Oil & Gas Operator | Jun 2025 |
| 10 | Webb Jess Oil Producer | | Oil Operator | Sep 2014 |
| 11 | Welch Family Trust | Ada, OK 74820-9643 | Oil & Gas Operator | Apr 2015 |
| 12 | Wentworth Operating Company | Oklahoma City, OK 73162-1863 | Oil & Gas Operator | Aug 2025 |
| 13 | West Operating Company | Seminole, OK 74868-3851 | Oil & Gas Operator | Mar 2015 |
| 14 | Westamerica Corporation | Dewey, OK 74029-0040 | Oil & Gas Operator | Aug 1999 |
| 15 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Jul 2025 |
| 16 | Wheeler Richard Jr | Oklahoma City, OK 73112-8857 | Oil & Gas Operator | Mar 2005 |
| 17 | White Alton L Trust | Nowata, OK 74048 | Oil & Gas Operator | Aug 2013 |
| 18 | White N J & White J B | Paden, OK 74860-0114 | Oil Operator | Aug 2013 |
| 19 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 20 | Whitley Robert L | Saint Louis, OK 74866-0004 | Oil & Gas Operator | Sep 2014 |
| 21 | Wilcox Oil Company | Rule, TX 79547 | Oil & Gas Operator | Aug 2008 |
| 22 | Williams Dale | Konawa, OK 74849-9211 | Oil Operator | Jun 2025 |
| 23 | Williams Reid Oil Co | Dallas, TX 75234 | Oil & Gas Operator | Jun 2025 |
| 24 | Wilshire Enterprises Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
| 25 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 26 | Wise Oil & Gas Company LLC | Shawnee, OK 74801-8507 | Oil & Gas Operator | Feb 2024 |
| 27 | WM Energy LLC | Asher, OK 74826 | Oil & Gas Operator | Jun 2025 |
| 28 | Woodland Operating LLC | Rio VIsta, TX 76093-0010 | Oil & Gas Operator | Apr 2025 |
| 29 | Wright Operating, Inc. | Denison, TX 75020 | Oil & Gas Operator | Oct 2025 |
| 30 | Wynn-Crosby Operating LP | Dallas, TX 75201 | Oil & Gas Operator | Jun 2025 |