| 301 | Bolin R L | Wichita Falls, TX 76308-2829 | Oil & Gas Operator | Apr 2004 |
| 302 | Bolin R L Properties LP | Wichita Falls, TX 76308-2829 | Oil & Gas Operator | Sep 2024 |
| 303 | Bollinger Oil Co | Tulsa, OK 74105 | Oil Operator | Aug 2018 |
| 304 | Bollinger, M A | Chanute, KS 66720 | Oil Operator | Jun 2023 |
| 305 | Bomber Energy LLC | Comanche, OK 73529 | Oil & Gas Operator | Jun 2025 |
| 306 | Bona Tangent LLC | Tulsa, OK 74133 | Oil & Gas Operator | Jun 2025 |
| 307 | Bond Drilling Company | Marietta, OK 73448-0372 | Oil & Gas Operator | Apr 2017 |
| 308 | Bond Oil & Gas LLC | Marietta, OK 73448 | Oil & Gas Operator | Jun 2025 |
| 309 | Boness, Mona | | Oil Operator | Mar 2015 |
| 310 | Bonita Hydrocarbons Company | Dallas, TX 75229 | Oil & Gas Operator | Jun 2008 |
| 311 | Bonnell Frank A | Stuart, OK 74570-5514 | Oil & Gas Operator | Dec 2021 |
| 312 | Boone And Boone Oil Co | Perry, OK 73077 | Oil & Gas Operator | Mar 2008 |
| 313 | Boone Operating LLC | Oklahoma City, OK 73118-6014 | Oil & Gas Operator | May 2025 |
| 314 | Boosted Production LLC | Mooreland, OK 73852-0076 | Oil & Gas Operator | Jun 2025 |
| 315 | Booth John H Inc | Tulsa, OK 74170 | Oil Operator | Sep 2019 |
| 316 | Boradi Petroleum Corporation | Oklahoma City, OK 73102 | Oil Operator | Nov 1998 |
| 317 | Borinquen Oil Company | Tussy, OK 73088 | Oil Operator | Nov 2001 |
| 318 | Borrowed Resources LLC | Edmond, OK 73025 | Oil & Gas Operator | Jun 2025 |
| 319 | Bosque Energy Partners LLC | Bluff Dale, TX 76433-3511 | Oil Operator | Apr 2020 |
| 320 | Bossa Alan Dba The Land Company | Ringling, OK 73456-2088 | Oil & Gas Operator | Mar 2025 |
| 321 | Bostex Operating Company | Nocona, TX 76255 | Oil Operator | Jul 2025 |
| 322 | Bostick Services Corporation | Crescent, OK 73028 | Oil & Gas Operator | Aug 2025 |
| 323 | Boswell Energy Corp. | Oklahoma City, OK 73114-7401 | Oil & Gas Operator | Nov 2004 |
| 324 | Bowles Jack P F | Edmond, OK 73083-3285 | Oil & Gas Operator | Sep 2021 |
| 325 | Bowman Charles A | Nowata, OK 74048 | Oil Operator | Aug 2004 |
| 326 | Box Energy Company | Dallas, TX 75244 | Oil & Gas Operator | Jun 2003 |
| 327 | Boxie Oil Co | Asher, OK 74826-0243 | Oil & Gas Operator | Feb 2008 |
| 328 | Boyce Producing Corporation | Edmond, OK 73012-4323 | Oil & Gas Operator | Mar 2015 |
| 329 | Boyle Philip Inc | Norman, OK 73072-6913 | Oil & Gas Operator | Jun 1999 |
| 330 | Boyle Phillip Inc | Norman, OK 73072 | Oil & Gas Operator | Mar 2015 |
| 331 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 332 | BP Explorationinc/Ofb See #17756 | | Oil & Gas Operator | Apr 2015 |
| 333 | BPC Creditors Trust | Oklahoma City, OK 73102-8606 | Oil & Gas Operator | Jun 1998 |
| 334 | Bracken Energy Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Mar 2015 |
| 335 | Bracken Operating, L.L.C. | Perryton, TX 79070 | Oil & Gas Operator | Oct 2025 |
| 336 | Bracksieck Lloyd H | Boulder, CO 80303 | Oil & Gas Operator | Feb 2019 |
| 337 | Bradco Oil Inc | Cleveland, OK 74020-3520 | Oil Operator | Jun 2023 |
| 338 | Braden Companies Inc | Edmond, OK 73013-3671 | Oil & Gas Operator | Jun 2025 |
| 339 | Braden-Deem Inc | Wichita, KS 67226 | Oil & Gas Operator | Apr 2025 |
| 340 | Bradmar Petroleum Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2015 |
| 341 | Brady Brothers | Cushing, OK 74023 | Oil Operator | Apr 2014 |
| 342 | Brady Company LLC (The) | Cushing, OK 74023 | Oil & Gas Operator | Jun 2025 |
| 343 | Brady Energy Investments LLC | Healdton, OK 73438-0788 | Oil & Gas Operator | Jun 2025 |
| 344 | Brady Fred D | Cleveland, OK 74020 | Oil & Gas Operator | Mar 1997 |
| 345 | Brady Oil Company Inc | Sasakwa, OK 74867-9723 | Oil Operator | Jun 2017 |
| 346 | Brady Production | Saskawa, OK 74867-9723 | Oil & Gas Operator | Aug 2019 |
| 347 | Brady Warnie E | Sasakwa, OK 74867 | Oil Operator | Mar 2004 |
| 348 | Brady William H | Healdton, OK 73438-0788 | Oil & Gas Operator | Mar 2025 |
| 349 | Brahman Operating LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 350 | Braley, William R. | Gage, OK 73843 | Oil & Gas Operator | Jul 2004 |
| 351 | Bramlett Corporation | Medford, OK 73759 | Oil & Gas Operator | Jul 2025 |
| 352 | Brammer Petroleum, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Oct 2025 |
| 353 | Brammer Supply Inc | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2014 |
| 354 | Brand Oil & Gas Inc | Oklahoma City, OK 73165-8911 | Oil & Gas Operator | May 2013 |
| 355 | Brandenburg R P | Oklahoma City, OK 73139 | Oil & Gas Operator | Jun 2006 |
| 356 | Brandie Oil, LLC | Nowata, OK 74048 | Oil Operator | Jun 2025 |
| 357 | Branham Oil & Gas | Nowata, OK 74048-9630 | Oil & Gas Operator | Oct 2020 |
| 358 | Branson Production Company | Oklahoma City, OK 73123-1323 | Oil & Gas Operator | Aug 2002 |
| 359 | Branstetter Olin R | Ponca City, OK 74601-3432 | Oil Operator | Jul 2001 |
| 360 | Bratco Inc | Dewey, OK 74029-0279 | Oil & Gas Operator | Jun 2025 |
| 361 | Bratco Operating Company | Dewey, OK 74029 | Oil & Gas Operator | Jul 2025 |
| 362 | Bravo Arkoma LLC | Tulsa, OK 74103-3100 | Oil & Gas Operator | Apr 2025 |
| 363 | Bravo Natural Resources, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2009 |
| 364 | Braxton Oil And Gas Corp. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2021 |
| 365 | Brazos Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 366 | Brchan Ventures LLC | Bartlesville, OK 74006-0281 | Oil Operator | Dec 2021 |
| 367 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2025 |
| 368 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 369 | Breitling Operating Corporation | Dallas, TX 75201 | Oil & Gas Operator | Aug 2016 |
| 370 | Brenneis Energy | Duncan, OK 73533-5415 | Oil & Gas Operator | Jun 2025 |
| 371 | Brenneis Oil Company | Norman, OK 73072-3963 | Oil & Gas Operator | Aug 2012 |
| 372 | Brent Baker Oil And Gas Inc | Oklahoma City, OK 73149-2932 | Oil & Gas Operator | Jul 2025 |
| 373 | Brewer Carroll L | Edmond, OK 73003-0010 | Oil & Gas Operator | Jun 2025 |
| 374 | Brewer Hazel R | Oologah, OK 74053-3540 | Oil & Gas Operator | Apr 2017 |
| 375 | Brewer J E | Seminole, OK 74818-0863 | Oil & Gas Operator | Mar 2014 |
| 376 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 377 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2025 |
| 378 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 379 | BRG Production Company | Tulsa, OK 74136-6338 | Oil & Gas Operator | Jul 2025 |
| 380 | Briar Oil & Gas - Oklahoma 1 LLC | Houston, TX 77027-9392 | Oil & Gas Operator | Jun 2025 |
| 381 | Bricar Inc | Oklahoma City, OK 73108 | Oil & Gas Operator | Nov 1998 |
| 382 | Brichacek Jerry Lee | Drumright, OK 74030-9777 | Oil & Gas Operator | Jan 2020 |
| 383 | Bricktown Energy LLC | Oklahoma City, OK 73112-5468 | Oil & Gas Operator | Jun 2025 |
| 384 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 385 | Bridger Petroleum Corp | | Oil & Gas Operator | Oct 1999 |
| 386 | Bridgers, Lindley | | Oil Operator | Nov 2012 |
| 387 | Bridon Energy LLC | Yukon, OK 73099 | Oil & Gas Operator | Jun 2025 |
| 388 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 389 | Bright Horizon Resources LLC | Tulsa, OK 74136-4220 | Oil & Gas Operator | Sep 2016 |
| 390 | Bright Oil & Gas Inc R E Osage Only | | Oil & Gas Operator | Nov 2012 |
| 391 | Brighton Energy LLC | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2015 |
| 392 | Briscoe Land Development Inc | Geary, OK 73040 | Oil Operator | May 2013 |
| 393 | Briscoe Oil Company | Kingfisher, OK 73750-2322 | Oil & Gas Operator | Apr 2014 |
| 394 | Briscoe Oil Operating Co., Inc. | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2015 |
| 395 | Briscoe R D Inc | Sheridan, WY 82801-7103 | Gas Operator | Mar 2015 |
| 396 | Brishoma Oil Company | Broken Arrow, OK 74012-4030 | Oil & Gas Operator | Feb 2010 |
| 397 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 398 | Bristow Resources Inc | Bristow, OK 74010-0659 | Oil & Gas Operator | Jun 2025 |
| 399 | Britt Oil Company LLC | Shawnee, OK 74801-9613 | Oil & Gas Operator | Jun 2025 |
| 400 | Brittany Energy LLC | San Antonio, TX 78209 | Oil & Gas Operator | May 2019 |