| 501 | Vintage Resources Inc | Lindsay, OK 73052-0285 | Oil Operator | Dec 2007 |
| 502 | Vitol Inc | Houston, TX 77098 | Oil & Gas Operator | Sep 2023 |
| 503 | W P Oil & Gas LLC | Coweta, OK 74429-5465 | Oil & Gas Operator | Mar 2015 |
| 504 | W S Crude Oil Purchasing Inc | Oklahoma City, OK 73129-7613 | Oil & Gas Operator | May 2008 |
| 505 | Wallace George C | Oklahoma City, OK 73120-0135 | Oil Operator | Nov 1994 |
| 506 | Ward Oil Co. | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 507 | Warpath Energy Inc | Broken Arrow, OK 74014-1118 | Oil & Gas Operator | Apr 2018 |
| 508 | Wave Energy LLC | | Oil Operator | Feb 2024 |
| 509 | Welch Energy LLC | Drumright, OK 74030-0346 | Oil Operator | Feb 2024 |
| 510 | Welch Family Trust | Ada, OK 74820-9643 | Oil & Gas Operator | Apr 2015 |
| 511 | Wells Edward K | Sapulpa, OK 74066-4243 | Oil & Gas Operator | Jun 2004 |
| 512 | Westamerica Corporation | Dewey, OK 74029-0040 | Oil & Gas Operator | Aug 1999 |
| 513 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Feb 2024 |
| 514 | Western Petroleum Company Inc | Tulsa, OK 74170-2676 | Oil & Gas Operator | Apr 2020 |
| 515 | Westwind Exploration Company | Oklahoma City, OK 73123 | Oil & Gas Operator | Oct 1998 |
| 516 | Westwood Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | May 2013 |
| 517 | WFD Oil Corporation | Edmond, OK 73012-0619 | Oil & Gas Operator | Feb 2024 |
| 518 | White Star Petroleum LLC | | Oil & Gas Operator | Jan 2024 |
| 519 | Whitehead Prod. Co., Inc. | Humble, TX 77338 | Oil & Gas Operator | Jan 2024 |
| 520 | Williams Kidd Drilling Corp | Claremore, OK 74017-0846 | Oil Operator | Jun 2013 |
| 521 | Windward Development LLC | Tulsa, OK 74136-7007 | Oil & Gas Operator | Jul 2019 |
| 522 | Wood Fay C Estate | Enid, OK 73703 | Oil & Gas Operator | Jun 2013 |
| 523 | Woodward Iodine Corporation | Woodward, OK 73802-1245 | Oil & Gas Operator | Feb 2024 |
| 524 | Wynn-Crosby Operating LP | Dallas, TX 75201 | Oil & Gas Operator | Jan 2024 |
| 525 | Xanadu Exploration Company | Broken Arrow, OK 74014 | Oil & Gas Operator | Feb 2024 |
| 526 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | May 2024 |
| 527 | Yarhola Production Company | Drumright, OK 74030-0693 | Oil & Gas Operator | Jan 2024 |
| 528 | Young Tommy Oil Inc | Woodward, OK 73802-0893 | Oil & Gas Operator | Jan 2024 |
| 529 | Zimet Brothers Inc | | Oil Operator | Mar 2008 |