| 201 | STL Oil & Gas LLC | Skiatook, OK 74070 | Oil & Gas Operator | Mar 2016 |
| 202 | Sunflower Well Service, Inc. | Canton, KS 67428 | Oil & Gas Operator | Dec 2025 |
| 203 | T & G Oil Operations LLC | | Oil Operator | Mar 2026 |
| 204 | T & L Production | | Oil Operator | May 1987 |
| 205 | Te-Pe Oil & Gas | | Oil & Gas Operator | Mar 2026 |
| 206 | Teichgraeber Oil, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Dec 2024 |
| 207 | Tenneco Oil Comp | | Oil & Gas Operator | Aug 1995 |
| 208 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Dec 2025 |
| 209 | Tom Brown Construction, Inc. | Astor, FL 32102 | Oil Operator | Mar 2026 |
| 210 | Tomkat Limited | | Oil & Gas Operator | Jul 1995 |
| 211 | Trek Aec, LLC | Wichita, KS 67202 | Oil & Gas Operator | Mar 2026 |
| 212 | Troyer, Wayne A. | Galva, KS 67443 | Oil Operator | Jun 1997 |
| 213 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2024 |
| 214 | Unruh, Elmer | Galva, KS 67443 | Oil & Gas Operator | Aug 1998 |
| 215 | V & R Oil | | Oil Operator | Mar 2026 |
| 216 | Victory Minerals LLC | Kansas City, MO 64141 | Oil Operator | Mar 2026 |
| 217 | Vincent Oil Corp | Wichita, KS 67202 | Oil & Gas Operator | Mar 2026 |
| 218 | Vintage Petroleu | | Oil & Gas Operator | Dec 1995 |
| 219 | Voigt O & G Comp | | Oil & Gas Operator | Nov 1993 |
| 220 | Voigt Oil & Gas Co., Inc. | McPherson, KS 67460 | Oil Operator | Mar 2026 |
| 221 | WD Oil Company I | | Oil Operator | Apr 1986 |
| 222 | Western Properti | | Oil Operator | Oct 1987 |
| 223 | Westgate Oil Com | | Oil Operator | Mar 1993 |
| 224 | Westgate Oil Company, Inc. | Eureka, KS 67045 | Oil & Gas Operator | May 2026 |
| 225 | White Hawk Oil C | | Oil & Gas Operator | Sep 1995 |
| 226 | White Hawk Oil Company, A General Partnership | Tulsa, OK 74101 | Oil Operator | Mar 2026 |
| 227 | White Hawk Oil Company, LLP | Tulsa, OK 74103 | Oil Operator | Mar 2026 |
| 228 | Widrig Oil LLC | Leawood, KS 66209 | Oil Operator | Mar 2026 |
| 229 | Xenex Incorporat | | Oil Operator | Mar 1991 |