| 4601 | Wakefield Oil Company, Inc. | Winfield, KS 67156 | Oil Operator | Aug 1999 |
| 4602 | Walcher Oil, LC | Bellevue, WA 98009 | Oil & Gas Operator | Jun 2025 |
| 4603 | Walcher, Wayne E. | Wichita, KS 67202 | Oil & Gas Operator | May 2024 |
| 4604 | Walker Corporation (The) | Oklahoma City, OK 73156 | Oil & Gas Operator | May 2006 |
| 4605 | Walker Ervin G | | Oil Operator | Jul 1992 |
| 4606 | Walker Oil & Gas | Early, TX 76802 | Oil & Gas Operator | Dec 2002 |
| 4607 | Walker Tank Service, Inc | Utica, KS 67584 | Oil Operator | Aug 2022 |
| 4608 | Walker, Ervin Gilbert | Medicine Lodge, KS 67104 | Oil & Gas Operator | Apr 2020 |
| 4609 | Wallace Energy I | | Oil Operator | Mar 1990 |
| 4610 | Wallace Energy Inc | Denver, CO 80202-4327 | Oil Operator | Jun 2015 |
| 4611 | Wallace Oil & Ga | | Gas Operator | Oct 1995 |
| 4612 | Wallace Oil & Gas Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Dec 2025 |
| 4613 | Waller Oil, LLC | Stockton, KS 67669 | Oil Operator | Jun 2025 |
| 4614 | Walls, Charles A. | Caney, KS 67333 | Oil Operator | Aug 2016 |
| 4615 | Walters Drilling | | Oil Operator | Mar 1988 |
| 4616 | Walton, Tara | Copan, OK 74022 | Oil Operator | Oct 2024 |
| 4617 | War Cry, LLC | Russell, KS 67665 | Oil Operator | Jun 2025 |
| 4618 | Ward Feed Yard, Inc. | Larned, KS 67550 | Oil & Gas Operator | Mar 2016 |
| 4619 | Warhorse Petroleum Inc | Lafayette, CO 80026 | Oil Operator | Jun 2025 |
| 4620 | Warner Oil Prod | | Oil Operator | Apr 1995 |
| 4621 | Warren American Oil Company LLC | Tulsa, OK 74147 | Oil & Gas Operator | Dec 2025 |
| 4622 | Warren Corporation | Oklahoma City, OK 73118 | Oil & Gas Operator | Jan 2016 |
| 4623 | Warren, James E. | Arkansas City, KS 67005 | Oil Operator | Nov 2009 |
| 4624 | Watson Petroleum | | Oil & Gas Operator | Feb 1990 |
| 4625 | Watson, Ben | Blue Mound, KS 66010 | Oil Operator | Oct 2008 |
| 4626 | Watt Larry | Copan, OK 74022 | Oil Operator | Oct 2019 |
| 4627 | Watts Oil And Gas | Hardtner, KS 67057 | Oil Operator | Apr 2006 |
| 4628 | Watts Tank Truck Service, Inc. | Hamilton, KS 66853 | Oil Operator | Jun 2025 |
| 4629 | Wausau Development Corporation | Laurel, MS 39440 | Oil & Gas Operator | Sep 2019 |
| 4630 | Way Drilling Com | | Oil & Gas Operator | Mar 1993 |
| 4631 | Wayside Angus Fa | | Oil & Gas Operator | Sep 2002 |
| 4632 | Wayside Prod Com | | Oil Operator | May 1984 |
| 4633 | WD Oil Company I | | Oil Operator | Apr 1986 |
| 4634 | Webco Oil Compan | | Oil Operator | Sep 1989 |
| 4635 | Webco Oil Company, Inc. | Hoisington, KS 67544 | Oil Operator | Jun 2025 |
| 4636 | Weber Four Oil Co., Inc. | Hoisington, KS 67544 | Oil Operator | Jun 2025 |
| 4637 | Webster Oil LLC | Leon, KS 67074 | Oil Operator | Jun 2025 |
| 4638 | Wedel, Darold | Canton, KS 67428 | Oil Operator | Apr 2002 |
| 4639 | Weeks, VIrginia | Hoisington, KS 67544 | Oil Operator | Mar 2002 |
| 4640 | Wehmeyer, Gerald | Independence, KS 67301 | Oil Operator | Aug 2024 |
| 4641 | Weigel Oil Company, LLC | Gorham, KS 67640 | Oil Operator | Jun 2025 |
| 4642 | Weigel V Francis | | Oil Operator | Mar 1994 |
| 4643 | Weigel, V. Francis - Family Partnership | Gorham, KS 67640 | Oil Operator | Jul 2004 |
| 4644 | Weilert Enterpri | | Oil Operator | Sep 1988 |
| 4645 | Weilert Michael | | Oil Operator | Oct 1993 |
| 4646 | Weilert, S.R. | Wichita, KS 67216 | Oil Operator | Oct 1998 |
| 4647 | Weinkauf Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2025 |
| 4648 | Well Tech Oil And Gas, Inc. | Wichita, KS 67206 | Oil Operator | Sep 2020 |
| 4649 | Wells Energy Com | | Oil & Gas Operator | Mar 1994 |
| 4650 | Wells Oil Compan | | Gas Operator | Sep 1984 |
| 4651 | Wells Oil, LLC | Gridley, KS 66852 | Oil Operator | Jun 2025 |
| 4652 | Wells-Battelstei | | Oil & Gas Operator | Mar 1993 |
| 4653 | Wellstar Corporation | Northglenn, CO 80233 | Oil & Gas Operator | Oct 2025 |
| 4654 | Wellsville Oil C | | Oil Operator | Dec 1996 |
| 4655 | Wellsville Oil Co | Wellsville, KS 66092 | Oil Operator | Sep 2000 |
| 4656 | Wellwin Drilling | | Oil & Gas Operator | Dec 1994 |
| 4657 | Wellwin Drilling Corporation | Wellington, KS 67152 | Oil & Gas Operator | Jun 2025 |
| 4658 | Wenert Trich Oil | | Oil & Gas Operator | Jul 1990 |
| 4659 | Werner Roland L | | Gas Operator | Nov 1992 |
| 4660 | Werth Exploration Trust | | Oil Operator | Dec 2013 |
| 4661 | West 40 Production | Ness City, KS 67560 | Oil Operator | Apr 1998 |
| 4662 | West Chase Count | | Gas Operator | Aug 1981 |
| 4663 | West Kansas Oil | | Oil Operator | Jul 1992 |
| 4664 | West Kansas Oil Corporation | Oberlin, KS 67749 | Oil Operator | Aug 1998 |
| 4665 | West Plains Enterprises, Inc | Plains, KS 67869 | Oil & Gas Operator | Sep 2022 |
| 4666 | West Sunset Disposal, LLC | Amarillo, TX 79159 | Oil Operator | Oct 2003 |
| 4667 | West X, Inc. | Hays, KS 67601 | Oil Operator | Aug 1997 |
| 4668 | Westech Energy C | | Oil & Gas Operator | Dec 1996 |
| 4669 | Western Frontier Adventure, LLC | Easton, KS 66020 | Oil Operator | Dec 2019 |
| 4670 | Western Fuel & S | | Oil Operator | Oct 1987 |
| 4671 | Western Kansas E | | Oil Operator | Aug 1993 |
| 4672 | Western Oil & Gas Development Co. | Robinson, IL 62454 | Oil Operator | Jun 2000 |
| 4673 | Western Oil Comp | | Oil Operator | Aug 1989 |
| 4674 | Western Operating Company | Denver, CO 80204 | Oil & Gas Operator | Aug 2025 |
| 4675 | Western Pacific Farms, Inc. | Copeland, KS 67837 | Oil & Gas Operator | Apr 2020 |
| 4676 | Western Plains Resources LLC | Garden City, KS 67846 | Oil & Gas Operator | Jun 2025 |
| 4677 | Western Properti | | Oil Operator | Oct 1987 |
| 4678 | Westgate Oil Com | | Oil Operator | Mar 1993 |
| 4679 | Westgate Oil Company, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Oct 2025 |
| 4680 | Westlake Energy Consultants, Inc. | Westlake VIllage, CA 91362 | Gas Operator | Dec 2019 |
| 4681 | Westmore Drillin | | Oil & Gas Operator | Oct 1995 |
| 4682 | Westmore Drilling Company, Inc. | Lawrence, KS 66047 | Oil & Gas Operator | Dec 2019 |
| 4683 | Weston Management & Operations Group | Centreville, MD 21617 | Oil Operator | May 1997 |
| 4684 | Westport Oil And Gas Company Inc | Denver, CO 80202 | Oil & Gas Operator | Feb 2002 |
| 4685 | Westport Oil Com | | Oil Operator | Feb 1994 |
| 4686 | Westport Petrole | | Oil Operator | Feb 1985 |
| 4687 | Weststar Resourc | | Oil Operator | Sep 1992 |
| 4688 | WGP-KHC, LLC | Houston, TX 77002 | Oil Operator | May 2017 |
| 4689 | Wheatbelt Invest | | Oil Operator | Mar 1991 |
| 4690 | Wheatland Oil & | | Oil & Gas Operator | Aug 1984 |
| 4691 | Wheeler Oil Company | Sperry, OK 74073-9417 | Oil & Gas Operator | Jun 2025 |
| 4692 | Whitaker Companies, Inc. | Humboldt, KS 66748 | Oil & Gas Operator | Apr 2025 |
| 4693 | Whitaker Enterpr | | Oil Operator | Oct 1992 |
| 4694 | Whitaker Harold | | Oil Operator | Aug 1990 |
| 4695 | Whitco Petroleum, LP | Leoti, KS 67861 | Oil & Gas Operator | Jun 2025 |
| 4696 | White & Ellis DR | | Oil & Gas Operator | Aug 1995 |
| 4697 | White & Ellis Drilling, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Jun 2025 |
| 4698 | White Eagle Reso | | Oil Operator | Dec 1996 |
| 4699 | White Eagle Resources Corp. | Taos, NM 87571 | Oil & Gas Operator | Jun 2016 |
| 4700 | White Exploration Inc | Wichita, KS 67278 | Oil & Gas Operator | Jun 2025 |