| 4701 | W & W Prod Compa | | Oil Operator | Oct 1995 |
| 4702 | W & W Production Company, General Partnership | Chanute, KS 66720 | Oil & Gas Operator | Sep 2025 |
| 4703 | W M Petroleum LLC | Cedar Vale, KS 67024 | Oil Operator | Sep 2025 |
| 4704 | W&W Oil Co | Denver City, TX 79323 | Oil Operator | Jun 2002 |
| 4705 | W-R Oil Company | | Oil Operator | Jul 1990 |
| 4706 | W. D. Short Oil Co. | | Oil Operator | Apr 2004 |
| 4707 | W. R. Williams, Inc. | Amarillo, TX 79105 | Gas Operator | Dec 2019 |
| 4708 | W.D. Short Oil Co., LLC | Oxford, KS 67119 | Oil & Gas Operator | Sep 2025 |
| 4709 | W.J., Inc. | Ellis, KS 67637 | Oil Operator | Jan 2001 |
| 4710 | W.R.A. Oil Co. | | Oil & Gas Operator | Mar 2025 |
| 4711 | W4 Energy, LLC | Humboldt, KS 66748 | Gas Operator | Nov 2015 |
| 4712 | Wabash Energy Corporation | Lawrenceville, IL 62439 | Oil & Gas Operator | Dec 2009 |
| 4713 | Wabash Production And Development, Inc. | Fairfield, IL 62837 | Gas Operator | Apr 2002 |
| 4714 | Wachtman-Schroed | | Oil Operator | Aug 1986 |
| 4715 | Wachtman-Schroeder, A General Partnership | Pawhuska, OK 74056 | Oil Operator | Aug 2025 |
| 4716 | Waco Oil | | Oil Operator | Apr 1992 |
| 4717 | Waddell, Eric F. | Natoma, KS 67651 | Oil Operator | Aug 1995 |
| 4718 | Wainoco Oil & Ga | | Oil & Gas Operator | Jan 1993 |
| 4719 | Wakefield Oil Company, Inc. | Winfield, KS 67156 | Oil Operator | Aug 1999 |
| 4720 | Walcher Oil, LC | Bellevue, WA 98009 | Oil & Gas Operator | Aug 2025 |
| 4721 | Walcher, Wayne E. | Wichita, KS 67202 | Oil & Gas Operator | May 2024 |
| 4722 | Walker Corporation (The) | Oklahoma City, OK 73156 | Oil & Gas Operator | May 2006 |
| 4723 | Walker Ervin G | | Oil Operator | Jul 1992 |
| 4724 | Walker Oil & Gas | Early, TX 76802 | Oil & Gas Operator | Dec 2002 |
| 4725 | Walker Tank Service, Inc | Utica, KS 67584 | Oil Operator | Aug 2022 |
| 4726 | Walker, Ervin Gilbert | Medicine Lodge, KS 67104 | Oil & Gas Operator | Apr 2020 |
| 4727 | Wallace Energy I | | Oil Operator | Mar 1990 |
| 4728 | Wallace Energy Inc | Denver, CO 80202-4327 | Oil Operator | Jun 2015 |
| 4729 | Wallace Oil & Ga | | Gas Operator | Oct 1995 |
| 4730 | Wallace Oil & Gas Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Feb 2026 |
| 4731 | Waller Oil, LLC | Stockton, KS 67669 | Oil Operator | Jun 2025 |
| 4732 | Walls, Charles A. | Caney, KS 67333 | Oil Operator | Aug 2016 |
| 4733 | Walters Drilling | | Oil Operator | Mar 1988 |
| 4734 | Walton, Tara | Copan, OK 74022 | Oil Operator | Aug 2025 |
| 4735 | Wapiti Petroleum, LLC | | Oil & Gas Operator | Sep 2025 |
| 4736 | War Cry, LLC | Russell, KS 67665 | Oil Operator | Sep 2025 |
| 4737 | Ward Feed Yard, Inc. | Larned, KS 67550 | Oil & Gas Operator | Mar 2016 |
| 4738 | Warhorse Petroleum Inc | Lafayette, CO 80026 | Oil Operator | Sep 2025 |
| 4739 | Warner Oil Prod | | Oil Operator | Apr 1995 |
| 4740 | Warren American Oil Company LLC | Tulsa, OK 74147 | Oil & Gas Operator | Feb 2026 |
| 4741 | Warren Corporation | Oklahoma City, OK 73118 | Oil & Gas Operator | Jan 2016 |
| 4742 | Warren, James E. | Arkansas City, KS 67005 | Oil Operator | Nov 2009 |
| 4743 | Watson Petroleum | | Oil & Gas Operator | Feb 1990 |
| 4744 | Watson, Ben | Blue Mound, KS 66010 | Oil Operator | Oct 2008 |
| 4745 | Watt Larry | Copan, OK 74022 | Oil Operator | Oct 2019 |
| 4746 | Watts Oil And Gas | Hardtner, KS 67057 | Oil Operator | Apr 2006 |
| 4747 | Watts Tank Truck Service, Inc. | Hamilton, KS 66853 | Oil Operator | Sep 2025 |
| 4748 | Wausau Development Corporation | Laurel, MS 39440 | Oil & Gas Operator | Sep 2019 |
| 4749 | Way Drilling Com | | Oil & Gas Operator | Mar 1993 |
| 4750 | Wayside Angus Fa | | Oil & Gas Operator | Sep 2002 |
| 4751 | Wayside Prod Com | | Oil Operator | May 1984 |
| 4752 | WD Oil Company I | | Oil Operator | Apr 1986 |
| 4753 | Webco Oil Compan | | Oil Operator | Sep 1989 |
| 4754 | Webco Oil Company, Inc. | Hoisington, KS 67544 | Oil Operator | Sep 2025 |
| 4755 | Weber Four Oil Co., Inc. | Hoisington, KS 67544 | Oil Operator | Aug 2025 |
| 4756 | Webster Oil LLC | Leon, KS 67074 | Oil Operator | Sep 2025 |
| 4757 | Wedel, Darold | Canton, KS 67428 | Oil Operator | Apr 2002 |
| 4758 | Weeks, VIrginia | Hoisington, KS 67544 | Oil Operator | Mar 2002 |
| 4759 | Wehmeyer, Gerald | Independence, KS 67301 | Oil Operator | Aug 2024 |
| 4760 | Weigel Oil Company, LLC | Gorham, KS 67640 | Oil Operator | Sep 2025 |
| 4761 | Weigel V Francis | | Oil Operator | Mar 1994 |
| 4762 | Weigel, V. Francis - Family Partnership | Gorham, KS 67640 | Oil Operator | Jul 2004 |
| 4763 | Weilert Enterpri | | Oil Operator | Sep 1988 |
| 4764 | Weilert Michael | | Oil Operator | Oct 1993 |
| 4765 | Weilert, S.R. | Wichita, KS 67216 | Oil Operator | Oct 1998 |
| 4766 | Weinkauf Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |
| 4767 | Well Tech Oil And Gas, Inc. | Wichita, KS 67206 | Oil Operator | Sep 2020 |
| 4768 | Wells Energy Com | | Oil & Gas Operator | Mar 1994 |
| 4769 | Wells Oil Compan | | Gas Operator | Sep 1984 |
| 4770 | Wells Oil, LLC | Gridley, KS 66852 | Oil Operator | Sep 2025 |
| 4771 | Wells-Battelstei | | Oil & Gas Operator | Mar 1993 |
| 4772 | Wellstar Corporation | Northglenn, CO 80233 | Oil & Gas Operator | Dec 2025 |
| 4773 | Wellsville Oil C | | Oil Operator | Dec 1996 |
| 4774 | Wellsville Oil Co | Wellsville, KS 66092 | Oil Operator | Sep 2000 |
| 4775 | Wellwin Drilling | | Oil & Gas Operator | Dec 1994 |
| 4776 | Wellwin Drilling Corporation | Wellington, KS 67152 | Oil & Gas Operator | Sep 2025 |
| 4777 | Wenert Trich Oil | | Oil & Gas Operator | Jul 1990 |
| 4778 | Werner Roland L | | Gas Operator | Nov 1992 |
| 4779 | Werth Exploration Trust | | Oil Operator | Dec 2013 |
| 4780 | West 40 Production | Ness City, KS 67560 | Oil Operator | Apr 1998 |
| 4781 | West Chase Count | | Gas Operator | Aug 1981 |
| 4782 | West Kansas Oil | | Oil Operator | Jul 1992 |
| 4783 | West Kansas Oil Corporation | Oberlin, KS 67749 | Oil Operator | Aug 1998 |
| 4784 | West Plains Enterprises, Inc | Plains, KS 67869 | Oil & Gas Operator | Sep 2022 |
| 4785 | West Sunset Disposal, LLC | Amarillo, TX 79159 | Oil Operator | Oct 2003 |
| 4786 | West X, Inc. | Hays, KS 67601 | Oil Operator | Aug 1997 |
| 4787 | Westech Energy C | | Oil & Gas Operator | Dec 1996 |
| 4788 | Western Frontier Adventure, LLC | Easton, KS 66020 | Oil Operator | Dec 2019 |
| 4789 | Western Fuel & S | | Oil Operator | Oct 1987 |
| 4790 | Western Kansas E | | Oil Operator | Aug 1993 |
| 4791 | Western Oil & Gas Development Co. | Robinson, IL 62454 | Oil Operator | Jun 2000 |
| 4792 | Western Oil Comp | | Oil Operator | Aug 1989 |
| 4793 | Western Operating Company | Denver, CO 80204 | Oil & Gas Operator | Nov 2025 |
| 4794 | Western Pacific Farms, Inc. | Copeland, KS 67837 | Oil & Gas Operator | Apr 2020 |
| 4795 | Western Plains Resources LLC | Garden City, KS 67846 | Oil & Gas Operator | Sep 2025 |
| 4796 | Western Properti | | Oil Operator | Oct 1987 |
| 4797 | Westgate Oil Com | | Oil Operator | Mar 1993 |
| 4798 | Westgate Oil Company, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Dec 2025 |
| 4799 | Westlake Energy Consultants, Inc. | Westlake VIllage, CA 91362 | Gas Operator | Dec 2019 |
| 4800 | Westmore Drillin | | Oil & Gas Operator | Oct 1995 |