| 201 | Black Star Petro | | Oil Operator | Jul 1995 |
| 202 | Black Star Petroleum Corp. | Oceanside, NY 11572 | Oil Operator | Oct 1997 |
| 203 | Black Stone Petroleum LLC | Wichita, KS 67206 | Oil Operator | Jul 2019 |
| 204 | Black Tea Oil, LLC | Wichita, KS 67206 | Oil Operator | Jun 2025 |
| 205 | Black W K Incorp | | Oil & Gas Operator | Sep 1991 |
| 206 | Black W K Produc | | Oil & Gas Operator | Aug 1991 |
| 207 | Black, Frank J., Oil Operations, Inc. | Overland Park, KS 66213 | Oil & Gas Operator | Dec 2009 |
| 208 | Black-Travis, Inc. | Paola, KS 66071 | Oil Operator | Jun 2025 |
| 209 | Blackbird Oil Co. | Great Bend, KS 67530 | Oil Operator | Feb 1996 |
| 210 | Blackburn Oil & Gas, Inc. | Kinsley, KS 67547 | Oil & Gas Operator | Sep 2004 |
| 211 | Blackhawk Energy | | Oil Operator | Dec 1993 |
| 212 | Blackhawk Explor | | Oil Operator | Jan 1990 |
| 213 | Blackhawk Exploration, Inc. | Wichita, KS 67214 | Oil & Gas Operator | May 2020 |
| 214 | Blackhawk Oil Co | Ottawa, KS 66067 | Oil & Gas Operator | Jan 2011 |
| 215 | Blackhawk Production Company | | Oil Operator | Jun 2025 |
| 216 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Dec 2025 |
| 217 | Blackstone Drill | | Oil & Gas Operator | Jan 1989 |
| 218 | Blackstone Drilling, Inc. | McPherson, KS 67460 | Gas Operator | Nov 2011 |
| 219 | Blair H H Oil Co | | Oil Operator | Feb 1988 |
| 220 | Blake Exploration | Hays, KS 67601 | Oil Operator | Oct 2007 |
| 221 | Blake Exploration, LLC | Bogue, KS 67625 | Oil Operator | Jun 2025 |
| 222 | Blake Production Company, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2025 |
| 223 | Blanchard, James R. | Paola, KS 66071 | Oil Operator | Nov 2015 |
| 224 | Blanchard, Joe, Jr. | Houma, LA 70360 | Oil Operator | Sep 1989 |
| 225 | Blazer, John A. | Oak Grove, AR 72660 | Oil Operator | Oct 1995 |
| 226 | Blessed Operating LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Jun 2025 |
| 227 | Bloomer Well Ser | | Oil Operator | Mar 1995 |
| 228 | Bloomer Well Service | | Oil Operator | Dec 2009 |
| 229 | Bloomer, Don C. And Bessie L. Liv. Trust | Rantoul, KS 66079 | Oil Operator | Dec 2024 |
| 230 | Blubaugh Charles | | Oil Operator | Feb 1995 |
| 231 | Blue Diamond Holdings, LLC | Wellsville, KS 66092 | Oil Operator | Dec 2009 |
| 232 | Blue Goose Drill | | Oil Operator | Aug 1991 |
| 233 | Blue Goose Drilling Company, Inc. | Great Bend, KS 67530 | Oil Operator | Jun 2025 |
| 234 | Blue Jay Operating, LLC | Fort Worth, TX 76107 | Gas Operator | Dec 2009 |
| 235 | Blue Mountain Company, Inc. | Wichita, KS 67212 | Oil Operator | Feb 1999 |
| 236 | Blue Sky Investments LLC | Harper, KS 67058 | Oil Operator | Dec 2009 |
| 237 | Blue Steel Investments, LLC | Edmond, OK 73013 | Oil Operator | Oct 2024 |
| 238 | Blue Top Crude Oil Co., Inc. | Farlington, KS 66734 | Oil Operator | Jun 2025 |
| 239 | Blue Top Energy LLC | Westport, CT 06880 | Oil Operator | Dec 2019 |
| 240 | Bluebird Production, Inc. | Great Bend, KS 67530 | Oil Operator | Nov 2011 |
| 241 | Bluejacket Operating, LLC | | Oil Operator | Jun 2025 |
| 242 | Blueridge Petroleum Corporation | Edmond, OK 73003 | Oil & Gas Operator | Jun 2025 |
| 243 | Bluestem, Inc | Cedar Vale, KS 67024 | Oil Operator | Dec 2014 |
| 244 | Bluetop Oil Comp | | Oil Operator | Nov 1995 |
| 245 | Bluff Creek Ridge, Inc. | Anthony, KS 67003 | Oil & Gas Operator | Jun 2025 |
| 246 | BMF Oil LLC | Hamilton, KS 66853 | Oil Operator | Dec 2019 |
| 247 | Bob'S Hauling Service, Inc. | St John, KS 67576 | Oil Operator | Apr 2025 |
| 248 | Bobcat Oilfield Service, Inc. | Louisburg, KS 66053 | Oil Operator | Jun 2025 |
| 249 | Bobcat Oilfield Services, Inc. | | Oil Operator | Dec 2009 |
| 250 | Boden Oil Compan | | Oil Operator | Jan 1985 |
| 251 | Boeckman, Robert | Independence, KS 67301 | Oil Operator | Aug 2004 |
| 252 | Boettcher, Fred | Marion, KS 66861 | Oil & Gas Operator | Dec 2009 |
| 253 | Boger Brothers D | | Oil & Gas Operator | Nov 1992 |
| 254 | Boger Brothers O | | Oil Operator | Jul 1995 |
| 255 | Bogle Dale Drill | | Oil Operator | Jul 1995 |
| 256 | Bogle Oilfield Services, LLC | Wellsville, KS 66092 | Oil Operator | Oct 2017 |
| 257 | Bohannan, Jerry | Sedan, KS 67361 | Oil Operator | Jan 2025 |
| 258 | Bolding Grady Co | | Oil & Gas Operator | Nov 1995 |
| 259 | Boley Investment | | Oil Operator | Aug 1995 |
| 260 | Boley Investments, Inc. | Wichita, KS 67212 | Oil Operator | Jun 1998 |
| 261 | Bolinger Backhoe | | Oil & Gas Operator | Dec 1996 |
| 262 | Bolinger Enterprises | | Oil & Gas Operator | Nov 1997 |
| 263 | Bollinger Limite | | Oil & Gas Operator | Jul 1989 |
| 264 | Bollinger M A | Chanute, KS 66720 | Oil Operator | Jun 2023 |
| 265 | Bollinger Oil Company | Tulsa, OK 74105 | Oil Operator | Aug 2018 |
| 266 | Bollinger, Jerald | Chanute, KS 66720 | Oil Operator | Dec 2024 |
| 267 | Bollinger, LTD. | Savonburg, KS 66772 | Gas Operator | May 2002 |
| 268 | Bomber Oil Inc. | Parker, KS 66072 | Oil Operator | Oct 2022 |
| 269 | Bonanza Carbon Capture, LLC | | Gas Operator | Jun 2025 |
| 270 | Bonanza Energy C | | Oil & Gas Operator | Sep 1995 |
| 271 | Bonanza Energy Corp | Benedict, KS 66714 | Oil & Gas Operator | Jul 2003 |
| 272 | Bonanza Oil Comp | | Oil Operator | Sep 1990 |
| 273 | Bond Oil Company | Marion, KS 66861 | Gas Operator | Jan 1991 |
| 274 | Bone, Sally L. | Woodland Park, CO 80866 | Gas Operator | Jun 2025 |
| 275 | Bonwell, W. A. | Wichita, KS 67202 | Oil Operator | Mar 1996 |
| 276 | Booth Industries Oil And Gas, LLC | Big Cove Tannery, PA 17212 | Oil Operator | Jul 2020 |
| 277 | Booth Oil Compan | | Oil Operator | Aug 1992 |
| 278 | Boots Oil, Inc. | Welda, KS 66091 | Oil Operator | Aug 2000 |
| 279 | Boots, H. E. | Independence, KS 67301 | Oil Operator | Apr 1993 |
| 280 | Border-Line Inco | | Oil Operator | Nov 1989 |
| 281 | Borell Oil Compa | | Oil Operator | Nov 1986 |
| 282 | Borell, Albert W. | Wilson, KS 67490 | Oil Operator | Jul 2005 |
| 283 | Borell, Elvern D. | Dighton, KS 67839 | Oil Operator | Dec 2009 |
| 284 | Boswell Energy Corporation | Oklahoma City, OK 73114-7401 | Oil & Gas Operator | Nov 2004 |
| 285 | Bow Creek Oil Company, General Partnership | Hays, KS 67601 | Oil & Gas Operator | Feb 2017 |
| 286 | Bowen Oil & Expl | | Oil & Gas Operator | Apr 1993 |
| 287 | Bowen, Charles D. | Sedan, KS 67361 | Oil & Gas Operator | Jul 1998 |
| 288 | Bowers Drilling | | Oil & Gas Operator | Jul 1995 |
| 289 | Bowers Drilling Co., Inc. | Wichita, KS 67211 | Oil & Gas Operator | Sep 2003 |
| 290 | Bowie Oil LLC | | Oil Operator | Jun 2025 |
| 291 | Bowles, Jack | Edmond, OK 73083 | Oil Operator | Apr 2020 |
| 292 | Bowman Oil Compa | | Oil Operator | Feb 1994 |
| 293 | Bowman Oil Company, A General Partnership | Codell, KS 67663 | Oil Operator | Jun 2025 |
| 294 | Boxberger Carl O | | Oil Operator | May 1994 |
| 295 | Boxberger, Carl Oil, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2009 |
| 296 | Boyd, Daniel P. | Overland Park, KS 66214 | Oil Operator | Mar 1989 |
| 297 | Boyer Jay C | | Oil Operator | Feb 1994 |
| 298 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Aug 2025 |
| 299 | BP Exploration I | | Oil & Gas Operator | Oct 1994 |
| 300 | BPG Capital, LLC | Frisco, TX 75034 | Oil Operator | Jul 2018 |