| 4601 | United Energy & Exploration LLC | Ada, OK 74821 | Oil & Gas Operator | Dec 2025 |
| 4602 | United Energy, Inc. | Wichita, KS 67230 | Oil & Gas Operator | Dec 2002 |
| 4603 | United Meridian | | Oil Operator | Dec 1992 |
| 4604 | United Oil & Gas | | Oil Operator | Feb 1988 |
| 4605 | United Petroleum | | Oil Operator | Mar 1986 |
| 4606 | United Petroleum Corporation | Edgwater, CO 80214 | Oil & Gas Operator | May 1996 |
| 4607 | United Reserve G | | Oil Operator | Aug 1987 |
| 4608 | United States Exploration, Inc. | Denver, CO 80802 | Oil & Gas Operator | Apr 2007 |
| 4609 | Universal Resour | | Oil & Gas Operator | Dec 1996 |
| 4610 | Universal Resources Corp. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jan 2000 |
| 4611 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2023 |
| 4612 | Unrein Oil Co | | Oil Operator | Sep 2025 |
| 4613 | Unruh, Elmer | Galva, KS 67443 | Oil & Gas Operator | Aug 1998 |
| 4614 | Unruh, Mark D. | Peru, KS 67360 | Oil Operator | Sep 2011 |
| 4615 | Upland Resources | | Oil Operator | Jul 1983 |
| 4616 | Upland Resources LLC | Canadian, TX 79014 | Oil & Gas Operator | Feb 2026 |
| 4617 | Upland Resources, Inc. | Canadian, TX 79014 | Oil & Gas Operator | Dec 2009 |
| 4618 | Uranus, Inc. | Kansas City, MO 64112 | Oil Operator | Jan 2000 |
| 4619 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Feb 2026 |
| 4620 | Us Energy Exploration Corp | Rural Valley, PA 16249 | Oil & Gas Operator | Dec 2025 |
| 4621 | Us Oil Resources LLC | Lakewood, CO 80123 | Oil Operator | Sep 2025 |
| 4622 | Usins Oil Compan | | Oil Operator | Jan 1993 |
| 4623 | Usx Operating Co., Inc. | Barnstall, OK 74002 | Oil & Gas Operator | Apr 2017 |
| 4624 | Utah Oil LLC | Rantoul, KS 66079 | Oil Operator | Sep 2025 |
| 4625 | V & F Oil Company, A General Partnership | Hays, KS 67601 | Oil Operator | Aug 2025 |
| 4626 | V & R Oil | | Oil Operator | Sep 2025 |
| 4627 | V W & B Drilling Co. | Cherryvale, KS 67335 | Gas Operator | Feb 1998 |
| 4628 | V. Francis Weigel Family Partnership LLC | Gorham, KS 67640 | Oil Operator | Sep 2025 |
| 4629 | V. R. Oil Co. | | Oil Operator | Sep 2025 |
| 4630 | Vac Petroleum Co | | Oil Operator | Dec 1990 |
| 4631 | Vail Energy/Enma | | Oil Operator | Oct 1987 |
| 4632 | Val Energy, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 4633 | Vamco Operations | | Oil & Gas Operator | Sep 2025 |
| 4634 | Van Buskirk Bill | | Oil Operator | Dec 1996 |
| 4635 | Van Buskirk, Billy L. | Severy, KS 67137 | Oil Operator | Dec 2009 |
| 4636 | Van Oil, Inc. | Madison, KS 66860 | Oil & Gas Operator | Jul 2025 |
| 4637 | Vanderman Oil | Neosho Falls, KS 66758 | Oil Operator | Feb 2006 |
| 4638 | Vanmax Explorati | | Oil Operator | Nov 1995 |
| 4639 | Vanon Energy Inc | Fort Worth, TX 76162 | Oil & Gas Operator | Jul 2022 |
| 4640 | Vanroyen Oil And Gas, L.L.C. | Wichita, KS 67217 | Oil Operator | Sep 2025 |
| 4641 | Vantage Petroleum, Inc. | Olmitz, KS 67564 | Oil Operator | May 2008 |
| 4642 | Vast Petroleum Corporation | Highland, UT 84003 | Oil Operator | Jan 2016 |
| 4643 | Vast Petroleum Of Kansas LLC | Bozeman, MT 59715 | Oil Operator | Dec 2009 |
| 4644 | Vastar Resources | | Oil & Gas Operator | Dec 1996 |
| 4645 | Vastar Resources Inc | Houston, TX 77253 | Oil & Gas Operator | Sep 2025 |
| 4646 | Vaughn Good Oil Co. | | Gas Operator | Sep 2025 |
| 4647 | Vci Production | Jarales, NM 87023 | Oil Operator | Jan 1997 |
| 4648 | Veale Donald K & | | Oil Operator | Oct 1985 |
| 4649 | Vector Minerals Corporation | Aurora, CO 80015 | Oil & Gas Operator | Nov 2025 |
| 4650 | Veem Jade Oil & Gas LLC | Plano, TX 75093 | Oil Operator | Aug 2024 |
| 4651 | Veenker Resources Inc | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2025 |
| 4652 | Venture Independent Petroleum, LLC | Llaves, NM 87027 | Oil Operator | Nov 2011 |
| 4653 | Venture Oil Comp | | Oil Operator | Aug 1988 |
| 4654 | Venture Production, Inc. | Mulvane, KS 67110 | Oil Operator | Jul 1998 |
| 4655 | Venture Resources | Denver, CO 80202 | Oil Operator | Dec 1993 |
| 4656 | Venture Resources, Inc. | Denver, CO 80250 | Oil Operator | Sep 2025 |
| 4657 | Venus Exploration, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jul 2013 |
| 4658 | Vera Cruz Petrol | | Oil & Gas Operator | Oct 1989 |
| 4659 | Verde Oil Company | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2025 |
| 4660 | Verde Operating Company | Littleton, CO 80122 | Gas Operator | Sep 2025 |
| 4661 | Verdigris Energy | | Gas Operator | Jun 1983 |
| 4662 | Vern Jones Oil & Gas Corp. | Sacramento, CA 95825 | Oil & Gas Operator | Dec 2025 |
| 4663 | Vesa Enterprises LLC | Broken Arrow, OK 74011 | Oil Operator | Aug 2025 |
| 4664 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | Feb 2026 |
| 4665 | Vess Transpacifi | | Oil & Gas Operator | Jul 1995 |
| 4666 | Vess-Transpacific Operating Co., Inc. | Wichita, KS 67201 | Oil & Gas Operator | May 2024 |
| 4667 | Vestal, Jack L. | Longton, KS 67352 | Gas Operator | Mar 1998 |
| 4668 | Viable Resources | | Oil Operator | Dec 1984 |
| 4669 | Vickers Farms Oil Venture, A General Partnership | Ottawa, KS 66067 | Oil Operator | Sep 2024 |
| 4670 | Vickers, Jerry L. | Ottawa, KS 66067 | Oil Operator | Sep 2024 |
| 4671 | Vicorp Energy In | | Oil Operator | Apr 1988 |
| 4672 | Victory Minerals LLC | Kansas City, MO 64141 | Oil Operator | Sep 2025 |
| 4673 | Victory Operating, Inc. | Andover, KS 67002 | Oil & Gas Operator | Sep 2025 |
| 4674 | Viersen & Cochran | Okmulgee, OK 74447 | Oil & Gas Operator | Jan 1998 |
| 4675 | Viking Internati | | Gas Operator | Jan 1988 |
| 4676 | Viking Petroleum | | Oil Operator | Mar 1990 |
| 4677 | Viking Production LLC | Fredonia, KS 66736 | Oil Operator | Mar 2016 |
| 4678 | Viking Resources | | Oil & Gas Operator | Sep 1995 |
| 4679 | Viking Resources, Inc. | Stafford, TX 77477 | Oil & Gas Operator | Feb 2026 |
| 4680 | Vin, Inc. | Sterling, KS 67579 | Oil Operator | Sep 2025 |
| 4681 | Vincent Oil Corp | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 4682 | Vintage Petroleu | | Oil & Gas Operator | Dec 1995 |
| 4683 | Vintage Petroleum | | Oil & Gas Operator | Feb 2003 |
| 4684 | Vintage Petroleum, LLC | Houston, TX 77210 | Oil & Gas Operator | Dec 2019 |
| 4685 | Viresen & Cochra | | Oil & Gas Operator | Sep 1995 |
| 4686 | Vitruvian Exploration LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2016 |
| 4687 | Viva International, Inc. | Overland Park, KS 66207 | Oil Operator | Jun 2023 |
| 4688 | Viva Oil Company, Inc. | Kermit, TX 79745 | Oil & Gas Operator | Oct 2015 |
| 4689 | Vji Natural Resources, Inc. | | Oil & Gas Operator | Sep 2025 |
| 4690 | Voigt O & G Comp | | Oil & Gas Operator | Nov 1993 |
| 4691 | Voigt Oil & Gas Co., Inc. | McPherson, KS 67460 | Oil Operator | Aug 2025 |
| 4692 | Voigts, William Jr. | Edgerton, KS 66021 | Oil Operator | Dec 2003 |
| 4693 | Volga Oil Incorp | | Oil Operator | Sep 1990 |
| 4694 | Vonfeldt Oil Ope | | Oil Operator | Oct 1994 |
| 4695 | Vonfeldt, Alan J | Russell, KS 67665 | Oil Operator | Sep 2025 |
| 4696 | Vonfeldt, Steven R | Russell, KS 67665 | Oil Operator | Jul 2025 |
| 4697 | Voyager Petroleu | | Oil & Gas Operator | Dec 1986 |
| 4698 | Voyager Petroleums, Inc. | Denver, CO 80202 | Gas Operator | Feb 2000 |
| 4699 | VT Energy Partners, LLC | Andover, KS 67002 | Oil & Gas Operator | Dec 2019 |
| 4700 | Vulcan Resources, LLC | Skiatook, OK 74070 | Oil Operator | Mar 2024 |