| 201 | Phillips Oil Company, LLC | Wichita, KS 67211 | Oil Operator | May 2026 |
| 202 | Phillips Oil Properties Inc. | Derby, KS 67037 | Oil Operator | May 2026 |
| 203 | Phoenix Oil Corp | Wichita, KS 67201 | Oil & Gas Operator | Jan 1999 |
| 204 | Place, Steve | El Dorado, KS 67042 | Oil Operator | Dec 2019 |
| 205 | Porter Oil | Peabody, KS 66866 | Oil Operator | Oct 2000 |
| 206 | Price, Ernest, Jr. | Atlanta, KS 67008 | Oil Operator | Jun 1995 |
| 207 | PT Oil LLC | Osage City, KS 66523 | Oil & Gas Operator | May 2026 |
| 208 | R & D Oil LLC | Oklahoma City, OK 73154 | Oil Operator | Dec 2005 |
| 209 | R & E Oil Co., Inc. | Augusta, KS 67010 | Oil Operator | Dec 2009 |
| 210 | R J Operating Company | Albany, TX 76430 | Oil & Gas Operator | May 2026 |
| 211 | Rains & Williams | | Oil & Gas Operator | Nov 1995 |
| 212 | Range Oil Co., Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jan 2020 |
| 213 | Range Oil Compan | | Oil & Gas Operator | Nov 1995 |
| 214 | Razook Oil Compa | | Oil Operator | Aug 1990 |
| 215 | RBM Oil LLC | Hillsboro, KS 67063 | Oil Operator | May 2026 |
| 216 | Reed Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Jun 2005 |
| 217 | Renegade Resources Corp. | Reno, NV 89511 | Oil & Gas Operator | Jul 2024 |
| 218 | Rexoco Incorpora | | Oil Operator | Apr 1992 |
| 219 | Rimco Oil & Gas | | Oil Operator | Mar 1987 |
| 220 | Ritchie Explorat | | Oil & Gas Operator | Dec 1996 |
| 221 | Ritchie, A. Scott | Wichita, KS 67202 | Oil Operator | Mar 1988 |
| 222 | Rodgers, Murray | Sedan, KS 67361 | Oil Operator | Oct 1996 |
| 223 | S & B Operating, LLC | Iowa Park, TX 76367 | Oil Operator | Sep 2026 |
| 224 | Saco Oil Company | El Dorado, KS 67042 | Oil Operator | Jan 2001 |
| 225 | Samson Resources | | Oil Operator | Jan 1994 |
| 226 | Satchell Creek Petroleum, LLC | Wichita, KS 67205 | Oil Operator | May 2026 |
| 227 | Seed Group/Aa Drilling | | Oil Operator | Oct 2009 |
| 228 | Sheffler Industries | Phoenix, AZ 85013 | Oil Operator | Aug 1999 |
| 229 | Shields Oil Prod | | Oil & Gas Operator | Aug 1995 |
| 230 | Short W D Oil Co | | Oil Operator | Mar 1996 |
| 231 | Silver Creek Oil | Merkel, TX 79536 | Oil & Gas Operator | Aug 2003 |
| 232 | Slo Oil, LLC | El Dorado, KS 67042 | Oil Operator | Dec 2025 |
| 233 | Smitherman, Leon C., Jr. | Andover, KS 67002 | Oil Operator | Dec 2019 |
| 234 | Smokey Valley Resources, Inc. | Geneseo, KS 67444 | Oil Operator | Nov 2008 |
| 235 | Snyder, Jim Estate (Deceased) | Hamilton, KS 66853 | Oil Operator | Dec 2009 |
| 236 | Sonoma Resources LLC | Andover, KS 67002 | Oil & Gas Operator | May 2026 |
| 237 | Soule, Richard A. | Eureka, KS 67045 | Oil Operator | Sep 2019 |
| 238 | Southern States | | Oil & Gas Operator | Jul 1988 |
| 239 | Spradco, Inc. | Towanda, KS 67144 | Oil Operator | May 2026 |
| 240 | Stebeth Gas Production, Inc. | Beaumont, KS 67012 | Oil Operator | May 1996 |
| 241 | Stelbar Oil Corp | Wichita, KS 67206 | Oil & Gas Operator | Aug 1995 |
| 242 | Stelbar Oil Corporation, Inc. | Wichita, KS 67206 | Oil & Gas Operator | May 2026 |
| 243 | Stewart Producers, Inc. | Mount Vernon, IL 62864 | Oil & Gas Operator | May 2026 |
| 244 | Suerte Oil Compa | | Oil & Gas Operator | Oct 1995 |
| 245 | Suerte Oil Company | Howard, KS 67349 | Oil & Gas Operator | Jan 2017 |
| 246 | Sundgren, Stephen E. And Jackie | Rosalia, KS 67132 | Oil Operator | Jun 2023 |
| 247 | Taylor Oil Company | Edmond, OK 73034 | Oil & Gas Operator | May 2026 |
| 248 | Te-Pe Oil & Gas | | Oil & Gas Operator | May 2026 |
| 249 | Teichgraeber Oil | | Oil Operator | Nov 1995 |
| 250 | Teichgraeber Oil, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Dec 2024 |
| 251 | Texaco USA - Mor | | Oil Operator | Aug 1988 |
| 252 | Three D Oil Comp | | Oil & Gas Operator | Jan 1988 |
| 253 | Timberline Oil & | | Oil & Gas Operator | Jul 1995 |
| 254 | Tomco Oil Incorp | | Oil Operator | Nov 1989 |
| 255 | Tomco Oil, Inc. | Atlanta, KS 67008 | Oil & Gas Operator | May 2026 |
| 256 | Tomlinson Oil Co Inc | Great Bend, KS 67530 | Oil & Gas Operator | Mar 2026 |
| 257 | Tripower Resources LLC | Ardmore, OK 73402 | Oil & Gas Operator | Sep 2026 |
| 258 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 259 | United Petroleum | | Oil Operator | Mar 1986 |
| 260 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2024 |
| 261 | Us Energy Exploration Corp | Rural Valley, PA 16249 | Oil & Gas Operator | May 2026 |
| 262 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | Sep 2026 |
| 263 | Viking Petroleum | | Oil Operator | Mar 1990 |
| 264 | Viking Resources | | Oil & Gas Operator | Sep 1995 |
| 265 | Viva International, Inc. | Overland Park, KS 66207 | Oil Operator | Jun 2023 |
| 266 | Waco Oil | | Oil Operator | Apr 1992 |
| 267 | Wakefield Oil Company, Inc. | Winfield, KS 67156 | Oil Operator | Aug 1999 |
| 268 | Webster Oil LLC | Leon, KS 67074 | Oil Operator | May 2026 |
| 269 | Westport Oil Com | | Oil Operator | Feb 1994 |
| 270 | White & Ellis DR | | Oil & Gas Operator | Aug 1995 |
| 271 | White & Ellis Drilling, Inc. | Wichita, KS 67206 | Oil & Gas Operator | May 2026 |
| 272 | White Pine Petro | | Oil Operator | Mar 1985 |
| 273 | White Pine Petroleum Corporation | Wichita, KS 67202 | Oil & Gas Operator | Dec 2019 |
| 274 | White, Robert F. | Wichita, KS 67220 | Oil & Gas Operator | Feb 2007 |
| 275 | Wilson Oil Compa | | Oil Operator | Dec 1986 |
| 276 | Wilson Oil Properties, LLC | Winfield, KS 67156 | Oil Operator | Nov 2009 |
| 277 | Wixson R J Compa | | Oil Operator | Jan 1989 |
| 278 | Wixson, R. J., Co. | Wichita, KS 67278 | Oil Operator | Oct 2002 |
| 279 | Woco, Inc. | Wichita, KS 67214 | Oil Operator | Dec 2009 |
| 280 | Younger Energy C | | Oil & Gas Operator | Dec 1996 |
| 281 | Yuma Oil Company | El Dorado, KS 67042 | Oil Operator | Apr 1993 |