| 4401 | Upland Resources | | Oil Operator | Jul 1983 |
| 4402 | Upland Resources LLC | Canadian, TX 79014 | Oil & Gas Operator | Sep 2026 |
| 4403 | Upland Resources, Inc. | Canadian, TX 79014 | Oil & Gas Operator | Dec 2009 |
| 4404 | Uranus, Inc. | Kansas City, MO 64112 | Oil Operator | Jan 2000 |
| 4405 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Sep 2026 |
| 4406 | Us Energy Exploration Corp | Rural Valley, PA 16249 | Oil & Gas Operator | May 2026 |
| 4407 | Us Oil Resources LLC | Lakewood, CO 80123 | Oil Operator | May 2026 |
| 4408 | Usins Oil Compan | | Oil Operator | Jan 1993 |
| 4409 | Usx Operating Co., Inc. | Barnstall, OK 74002 | Oil & Gas Operator | Apr 2017 |
| 4410 | Utah Oil LLC | Rantoul, KS 66079 | Oil Operator | May 2026 |
| 4411 | V & F Oil Company, A General Partnership | Hays, KS 67601 | Oil Operator | May 2026 |
| 4412 | V & R Oil | | Oil Operator | May 2026 |
| 4413 | V. Francis Weigel Family Partnership LLC | Gorham, KS 67640 | Oil Operator | May 2026 |
| 4414 | V. R. Oil Co. | | Oil Operator | May 2026 |
| 4415 | Vac Petroleum Co | | Oil Operator | Dec 1990 |
| 4416 | Vail Energy/Enma | | Oil Operator | Oct 1987 |
| 4417 | Val Energy, Inc. | Wichita, KS 67202 | Oil & Gas Operator | May 2026 |
| 4418 | Vamco Operations | | Oil & Gas Operator | May 2026 |
| 4419 | Van Buskirk Bill | | Oil Operator | Dec 1996 |
| 4420 | Van Buskirk, Billy L. | Severy, KS 67137 | Oil Operator | Dec 2009 |
| 4421 | Van Oil, Inc. | Madison, KS 66860 | Oil & Gas Operator | May 2026 |
| 4422 | Vanderman Oil | Neosho Falls, KS 66758 | Oil Operator | Feb 2006 |
| 4423 | Vanmax Explorati | | Oil Operator | Nov 1995 |
| 4424 | Vanon Energy Inc | Fort Worth, TX 76162 | Oil & Gas Operator | Jul 2022 |
| 4425 | Vanroyen Oil And Gas, L.L.C. | Wichita, KS 67217 | Oil Operator | Apr 2026 |
| 4426 | Vantage Petroleum, Inc. | Olmitz, KS 67564 | Oil Operator | May 2008 |
| 4427 | Vast Petroleum Corporation | Highland, UT 84003 | Oil Operator | Jan 2016 |
| 4428 | Vast Petroleum Of Kansas LLC | Bozeman, MT 59715 | Oil Operator | Dec 2009 |
| 4429 | Vastar Resources | | Oil & Gas Operator | Dec 1996 |
| 4430 | Vastar Resources Inc | Houston, TX 77253 | Oil & Gas Operator | May 2026 |
| 4431 | Vaughn Good Oil Co. | | Gas Operator | May 2026 |
| 4432 | Vci Production | Jarales, NM 87023 | Oil Operator | Jan 1997 |
| 4433 | Veale Donald K & | | Oil Operator | Oct 1985 |
| 4434 | Vector Minerals Corporation | Aurora, CO 80015 | Oil & Gas Operator | Jun 2026 |
| 4435 | Veem Jade Oil & Gas LLC | Plano, TX 75093 | Oil Operator | Aug 2024 |
| 4436 | Veenker Resources Inc | Oklahoma City, OK 73113 | Oil & Gas Operator | Jul 2026 |
| 4437 | Venture Independent Petroleum, LLC | Llaves, NM 87027 | Oil Operator | Nov 2011 |
| 4438 | Venture Oil Comp | | Oil Operator | Aug 1988 |
| 4439 | Venture Production, Inc. | Mulvane, KS 67110 | Oil Operator | Jul 1998 |
| 4440 | Venture Resources | Denver, CO 80202 | Oil Operator | Dec 1993 |
| 4441 | Venture Resources, Inc. | Denver, CO 80250 | Oil Operator | May 2026 |
| 4442 | Venus Exploration, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jul 2013 |
| 4443 | Vera Cruz Petrol | | Oil & Gas Operator | Oct 1989 |
| 4444 | Verde Oil Company | San Antonio, TX 78209 | Oil & Gas Operator | May 2026 |
| 4445 | Verde Operating Company | Littleton, CO 80122 | Gas Operator | May 2026 |
| 4446 | Verdigris Energy | | Gas Operator | Jun 1983 |
| 4447 | Vern Jones Oil & Gas Corp. | Sacramento, CA 95825 | Oil & Gas Operator | Jul 2026 |
| 4448 | Vesa Enterprises LLC | Broken Arrow, OK 74011 | Oil Operator | Apr 2026 |
| 4449 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | Sep 2026 |
| 4450 | Vess Transpacifi | | Oil & Gas Operator | Jul 1995 |
| 4451 | Vess-Transpacific Operating Co., Inc. | Wichita, KS 67201 | Oil & Gas Operator | May 2026 |
| 4452 | Vestal, Jack L. | Longton, KS 67352 | Gas Operator | Mar 1998 |
| 4453 | Viable Resources | | Oil Operator | Dec 1984 |
| 4454 | Vickers Farms Oil Venture, A General Partnership | Ottawa, KS 66067 | Oil Operator | Sep 2024 |
| 4455 | Vickers, Jerry L. | Ottawa, KS 66067 | Oil Operator | Sep 2024 |
| 4456 | Vicorp Energy In | | Oil Operator | Apr 1988 |
| 4457 | Victory Minerals LLC | Kansas City, MO 64141 | Oil Operator | May 2026 |
| 4458 | Victory Operating, Inc. | Andover, KS 67002 | Oil & Gas Operator | May 2026 |
| 4459 | Viking Petroleum | | Oil Operator | Mar 1990 |
| 4460 | Viking Production LLC | Fredonia, KS 66736 | Oil Operator | Mar 2016 |
| 4461 | Viking Resources | | Oil & Gas Operator | Sep 1995 |
| 4462 | Viking Resources, Inc. | Stafford, TX 77477 | Oil & Gas Operator | Sep 2026 |
| 4463 | Vin, Inc. | Sterling, KS 67579 | Oil Operator | Apr 2026 |
| 4464 | Vincent Oil Corp | Wichita, KS 67202 | Oil & Gas Operator | May 2026 |
| 4465 | Vintage Petroleu | | Oil & Gas Operator | Dec 1995 |
| 4466 | Vintage Petroleum | | Oil & Gas Operator | Feb 2003 |
| 4467 | Vintage Petroleum, LLC | Houston, TX 77210 | Oil & Gas Operator | Dec 2019 |
| 4468 | Viresen & Cochra | | Oil & Gas Operator | Sep 1995 |
| 4469 | Vision Oil & Gas Services LLC | Wichita, KS 67216 | Oil Operator | Apr 2026 |
| 4470 | Vitruvian Exploration LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2016 |
| 4471 | Viva International, Inc. | Overland Park, KS 66207 | Oil Operator | Jun 2023 |
| 4472 | Viva Oil Company, Inc. | Kermit, TX 79745 | Oil & Gas Operator | Oct 2015 |
| 4473 | Vji Natural Resources, Inc. | | Oil & Gas Operator | May 2026 |
| 4474 | Voigt O & G Comp | | Oil & Gas Operator | Nov 1993 |
| 4475 | Voigt Oil & Gas Co., Inc. | McPherson, KS 67460 | Oil Operator | Apr 2026 |
| 4476 | Voigts, William Jr. | Edgerton, KS 66021 | Oil Operator | Dec 2003 |
| 4477 | Volga Oil Incorp | | Oil Operator | Sep 1990 |
| 4478 | Vonfeldt Oil Ope | | Oil Operator | Oct 1994 |
| 4479 | Vonfeldt, Alan J | Russell, KS 67665 | Oil Operator | May 2026 |
| 4480 | Vonfeldt, Steven R | Russell, KS 67665 | Oil Operator | May 2026 |
| 4481 | Voyager Petroleu | | Oil & Gas Operator | Dec 1986 |
| 4482 | VT Energy Partners, LLC | Andover, KS 67002 | Oil & Gas Operator | Dec 2019 |
| 4483 | Vulcan Resources, LLC | Skiatook, OK 74070 | Oil Operator | Mar 2024 |
| 4484 | W & W Prod Compa | | Oil Operator | Oct 1995 |
| 4485 | W & W Production Company, General Partnership | Chanute, KS 66720 | Oil & Gas Operator | May 2026 |
| 4486 | W M Petroleum LLC | Cedar Vale, KS 67024 | Oil Operator | Apr 2026 |
| 4487 | W&W Oil Co | Denver City, TX 79323 | Oil Operator | Jun 2002 |
| 4488 | W-R Oil Company | | Oil Operator | Jul 1990 |
| 4489 | W. D. Short Oil Co. | | Oil Operator | Apr 2004 |
| 4490 | W. R. Williams, Inc. | Amarillo, TX 79105 | Gas Operator | Dec 2019 |
| 4491 | W.D. Short Oil Co., LLC | Oxford, KS 67119 | Oil & Gas Operator | May 2026 |
| 4492 | W.J., Inc. | Ellis, KS 67637 | Oil Operator | Jan 2001 |
| 4493 | W.R.A. Oil Co. | | Oil & Gas Operator | Mar 2025 |
| 4494 | W4 Energy, LLC | Humboldt, KS 66748 | Gas Operator | Nov 2015 |
| 4495 | Wabash Energy Corporation | Lawrenceville, IL 62439 | Oil & Gas Operator | Dec 2009 |
| 4496 | Wachtman-Schroed | | Oil Operator | Aug 1986 |
| 4497 | Wachtman-Schroeder, A General Partnership | Pawhuska, OK 74056 | Oil Operator | Apr 2026 |
| 4498 | Waco Oil | | Oil Operator | Apr 1992 |
| 4499 | Waddell, Eric F. | Natoma, KS 67651 | Oil Operator | Aug 1995 |
| 4500 | Wainoco Oil & Ga | | Oil & Gas Operator | Jan 1993 |