| 6501 | Westland Oil Development Corp. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 6502 | Westphal Oil & Gas Inc | Fort Smith, AR 72901-2199 | Oil & Gas Operator | Feb 2015 |
| 6503 | Westshore Operating Inc | Naples, FL 34109-0549 | Oil & Gas Operator | Dec 2011 |
| 6504 | Westside Wells Inc | Altus, OK 73521 | Oil & Gas Operator | Nov 2020 |
| 6505 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Nov 2025 |
| 6506 | Weststar Operating Company | Santa Anna, TX 76878 | Oil & Gas Operator | Mar 2015 |
| 6507 | Westwind Exploration Company | Oklahoma City, OK 73123 | Oil & Gas Operator | Oct 1998 |
| 6508 | Westwood Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | May 2013 |
| 6509 | Wetzel Producing Company | Duncan, OK 73533-4602 | Oil & Gas Operator | Nov 2025 |
| 6510 | WF Operating LLC | Bartlesville, OK 74003 | Oil Operator | May 2023 |
| 6511 | WFD Oil Corporation | Edmond, OK 73012 | Oil & Gas Operator | Oct 2025 |
| 6512 | WFW Production Company, Inc. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 6513 | WG Oil & Gas LLC | Okmulgee, OK 74447-7862 | Oil & Gas Operator | Dec 2022 |
| 6514 | Wharton Oil Co. | Vernon, TX 76384 | Oil & Gas Operator | Dec 2000 |
| 6515 | Wheatland Oil Inc | Enid, OK 73702-1032 | Oil & Gas Operator | Mar 2015 |
| 6516 | Wheeler & Hanlin MFG Co Inc | Tulsa, OK 74148 | Oil Operator | Jun 1998 |
| 6517 | Wheeler Energy Co. | Tulsa, OK 74101 | Oil & Gas Operator | Nov 2025 |
| 6518 | Wheeler Energy, LLC | Tulsa, OK 74101 | Oil & Gas Operator | Dec 2025 |
| 6519 | Wheeler Oil & Gas Inc | Tulsa, OK 74103-4293 | Oil & Gas Operator | Jan 2007 |
| 6520 | Wheeler Oil Company | Sperry, OK 74073-9417 | Oil & Gas Operator | Sep 2025 |
| 6521 | Wheeler Richard Jr | Oklahoma City, OK 73112-8857 | Oil & Gas Operator | Mar 2005 |
| 6522 | Whitaker Energy Inc | Humble, TX 77346-1798 | Oil & Gas Operator | Oct 2025 |
| 6523 | Whitaker Raymond | Paul Valley, OK 73075-1041 | Oil & Gas Operator | May 2007 |
| 6524 | Whitco Operating Company | Duncan, OK 73534-1936 | Oil & Gas Operator | Oct 2009 |
| 6525 | Whitdale Inc | Cushing, OK 74023 | Oil & Gas Operator | Aug 2023 |
| 6526 | White Alton L Trust | Nowata, OK 74048 | Oil & Gas Operator | Aug 2013 |
| 6527 | White Brothers Investment Inc | Dallas, TX 75201 | Oil & Gas Operator | Apr 2014 |
| 6528 | White Buffalo Petroleum Co | Bethany, OK 73008-3104 | Oil & Gas Operator | Jun 2007 |
| 6529 | White Clarence A | Lawton, OK 73505-4927 | Oil & Gas Operator | Sep 2025 |
| 6530 | White Exploration Inc | Wichita, KS 67278 | Oil & Gas Operator | Sep 2025 |
| 6531 | White Goat Resources LLC | Yukon, OK 73099 | Oil & Gas Operator | Nov 2025 |
| 6532 | White Mike Oil Field Service | Edmond, OK 73034 | Oil & Gas Operator | Jan 2013 |
| 6533 | White Monty & Terry Production | Paden, OK 74860 | Oil & Gas Operator | May 2013 |
| 6534 | White N J & White J B | Paden, OK 74860-0114 | Oil Operator | Aug 2013 |
| 6535 | White Oak Production Company | Conway, AR 72034 | Oil & Gas Operator | Sep 2005 |
| 6536 | White Oil Company | Cement, OK 73017-0515 | Oil Operator | Jun 2002 |
| 6537 | White Operating Company | Oklahoma City, OK 73159-7136 | Oil & Gas Operator | Nov 2025 |
| 6538 | White Quincy | Haskell, OK 74436-8798 | Oil Operator | Apr 2020 |
| 6539 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2025 |
| 6540 | White Star Petroleum II LLC | Oklahoma City, OK 73113-1360 | Oil & Gas Operator | Oct 2025 |
| 6541 | White Star Petroleum LLC | Oklahoma City, OK 73116-7906 | Oil & Gas Operator | Jul 2025 |
| 6542 | White Stone LLC | Waynoka, OK 73860-4801 | Oil & Gas Operator | Nov 2025 |
| 6543 | White Walter & Betty | | Oil Operator | Mar 2018 |
| 6544 | White'S Well Service | Healdton, OK 73438-4160 | Oil & Gas Operator | Oct 2025 |
| 6545 | White, Wesley R | | Oil Operator | Oct 2025 |
| 6546 | Whitecap Energy L.L.C. | | Oil & Gas Operator | Sep 2018 |
| 6547 | Whitehead Prod. Co., Inc. | Humble, TX 77338 | Oil & Gas Operator | Oct 2025 |
| 6548 | Whitehead Ross E | Lamont, OK 74643-0326 | Oil & Gas Operator | Nov 2014 |
| 6549 | Whitehorse Inc | Saint Charles, MO 63303-4204 | Oil & Gas Operator | Sep 2015 |
| 6550 | Whiteman Industries Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | May 2025 |
| 6551 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 6552 | Whitley Oil & Gas Inc | Owasso, OK 74055 | Oil & Gas Operator | Jun 2009 |
| 6553 | Whitley Robert L | Saint Louis, OK 74866-0004 | Oil & Gas Operator | Sep 2014 |
| 6554 | Whitmar Exploration Company | Denver, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 6555 | Whitmar Natural Resources Co | Tulsa, OK 74136-9998 | Oil & Gas Operator | Jun 2004 |
| 6556 | Whitmar Operating Company | Tulsa, OK 74103-3515 | Oil & Gas Operator | Apr 2009 |
| 6557 | Whittington Curtis | Stonewall, OK 74871-0482 | Oil & Gas Operator | Feb 2011 |
| 6558 | Whomble O O | Morris, OK 74445 | Oil Operator | Jun 2021 |
| 6559 | WHR Corporation | | Oil & Gas Operator | Jul 2014 |
| 6560 | Wible Limited Liability Co | Edmond, OK 73012 | Oil Operator | Oct 2024 |
| 6561 | Wicklund Petroleum Corporation | Naples, FL 34108-0108 | Oil & Gas Operator | Dec 2019 |
| 6562 | Wieck Oil Company LLC | Cromwell, OK 74859 | Oil Operator | Aug 2014 |
| 6563 | Wikel, David W | | Oil Operator | Oct 2025 |
| 6564 | Wil-MC Oil Corporation The | Irving, TX 75015-2510 | Oil & Gas Operator | Mar 1999 |
| 6565 | Wil-Ron Inc | Lucien, OK 73757-9710 | Oil & Gas Operator | Oct 2025 |
| 6566 | Wilco Oil & Gas Corporation | Oklahoma City, OK 73159-6229 | Oil & Gas Operator | Dec 2023 |
| 6567 | Wilcox Oil Company | Rule, TX 79547 | Oil & Gas Operator | Aug 2008 |
| 6568 | Wilcox Pipe & Supply Co | Oklahoma City, OK 73189 | Oil & Gas Operator | May 2006 |
| 6569 | Wilcoxson Brothers | Terral, OK 73569 | Oil Operator | Mar 2008 |
| 6570 | Wild Outdoors Oil LLC | Duncan, OK 73533 | Oil & Gas Operator | Nov 2025 |
| 6571 | Wildcat Cement Co. | Shamrock, TX 79079 | Oil & Gas Operator | May 2015 |
| 6572 | Wildfire Oil & Gas Inc | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2014 |
| 6573 | Wildhorse Oil & Gas Corporation | Ardmore, OK 73402 | Oil & Gas Operator | May 2019 |
| 6574 | Wildhorse Operating Company | Ardmore, OK 73402 | Oil & Gas Operator | Dec 2025 |
| 6575 | Wildwood Operating LLC | Hennessey, OK 73742-7711 | Oil & Gas Operator | Nov 2025 |
| 6576 | Wilkins L L E & O Company | Shawnee, OK 74801 | Oil & Gas Operator | Aug 2018 |
| 6577 | Wilkinson George R | St Augustine, FL 32080-5352 | Oil & Gas Operator | Jun 2011 |
| 6578 | Wilkinson Oil & Gas LLC | Duncan, OK 73533-2048 | Oil Operator | Nov 2025 |
| 6579 | Wilkison Richard W | Oklahoma City, OK 73107 | Oil Operator | Mar 2011 |
| 6580 | Will Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 6581 | Willa Mae Overman LLC | Ponca City, OK 74601-9451 | Oil & Gas Operator | Aug 2023 |
| 6582 | William Jefferson Turner | Marlow, OK 73055 | Oil & Gas Operator | Apr 2007 |
| 6583 | Williams Brothers Engineering Company | Tulsa, OK 74134-5885 | Oil & Gas Operator | May 2013 |
| 6584 | Williams Dale | Konawa, OK 74849-9211 | Oil Operator | Oct 2025 |
| 6585 | Williams Dale And Dorothy Family Trust | Maud, OK 74854-2011 | Oil & Gas Operator | Oct 2025 |
| 6586 | Williams Doyle Dba BCF Gas | Tulsa, OK 74114-7099 | Oil & Gas Operator | Jul 2023 |
| 6587 | Williams Jack W | Ardmore, OK 73401-4726 | Oil Operator | Feb 2017 |
| 6588 | Williams Kidd Drilling Corp | Claremore, OK 74017-0846 | Oil Operator | Jun 2013 |
| 6589 | Williams M H | Red Rock, OK 74651-0311 | Oil & Gas Operator | Jun 2023 |
| 6590 | Williams Operating Company LLC | Comanche, OK 73529 | Oil Operator | Nov 2025 |
| 6591 | Williams Petroleum Company, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 2025 |
| 6592 | Williams Refractories Inc | Cushing, OK 74023 | Oil & Gas Operator | Feb 2015 |
| 6593 | Williams Reid Oil Co | Dallas, TX 75234 | Oil & Gas Operator | Oct 2025 |
| 6594 | Williams Roger F | Tulsa, OK 74152-0951 | Oil & Gas Operator | May 2013 |
| 6595 | Williams Royce S | Healdton, OK 73438-0306 | Oil & Gas Operator | Apr 2014 |
| 6596 | Williams, Clayton Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Dec 2025 |
| 6597 | Williams, Doyle | | Oil & Gas Operator | Oct 2025 |
| 6598 | Williamson Gregory L | Skiatook, OK 74070-0028 | Oil & Gas Operator | Mar 2015 |
| 6599 | Williamson Ozella | Skiatook, OK 74070 | Oil Operator | Aug 2013 |
| 6600 | Williford Energy Company | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2025 |