| 601 | Blackcat Oil Company | Glencoe, OK 74032 | Oil & Gas Operator | Jun 2026 |
| 602 | Blackfire Operating LLC | Oklahoma City, OK 73116-4223 | Oil & Gas Operator | Jun 2026 |
| 603 | Blackhawk Oil Co | Ottawa, KS 66067 | Oil & Gas Operator | Jan 2011 |
| 604 | Blackjack Oak Production, LLC | | Oil Operator | May 2026 |
| 605 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Sep 2026 |
| 606 | Blackjack Oil LTD | Denver, CO 80223 | Oil Operator | May 1996 |
| 607 | Blackjack Supply Company | Edmond, OK 73013-1144 | Oil & Gas Operator | May 2012 |
| 608 | Blackrock Energy LLC | Wagoner, OK 74467 | Oil Operator | Apr 2025 |
| 609 | Blackstock Petroleum Co | Tulsa, OK 74136-4940 | Oil & Gas Operator | Oct 1994 |
| 610 | Blackwell Exploration & Development LLC | Dallas, TX 75252-5637 | Oil & Gas Operator | Jan 2024 |
| 611 | Blackwell Gas Company | | Gas Operator | Jun 1997 |
| 612 | Blackwell Operating LLC | Andrews, TX 79714 | Oil & Gas Operator | May 2025 |
| 613 | Blaik Oil Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2009 |
| 614 | Blair Oil Company | Kingfisher, OK 73750-1213 | Oil & Gas Operator | Jun 2026 |
| 615 | Blake Production Company, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Sep 2026 |
| 616 | Blakemore Oil & Gas In Okla | Allen, TX 75002-5008 | Oil Operator | Aug 2013 |
| 617 | Blanchard Henry | Tupelo, OK 74572 | Oil & Gas Operator | Mar 2023 |
| 618 | BLB Inc | Kingfisher, OK 73750 | Oil & Gas Operator | May 2026 |
| 619 | Bledsoe Petro Corporation | Dallas, TX 75201 | Oil & Gas Operator | Dec 2000 |
| 620 | BLR Energy LLC | Pawhuska, OK 74056 | Oil Operator | May 2026 |
| 621 | Blubaugh Marvin C | Tonkawa, OK 74653-4739 | Oil & Gas Operator | Nov 2014 |
| 622 | Blubaugh Ronald D | Tonkawa, OK 74653-0066 | Oil & Gas Operator | Sep 2014 |
| 623 | Blue Bear Energy LLC | Coalgate, OK 74538-3898 | Gas Operator | Jun 2026 |
| 624 | Blue Bison Operating LLC | Chickasha, OK 73018 | Oil & Gas Operator | May 2026 |
| 625 | Blue Cedar Energy LLC | Edmond, OK 73013 | Oil & Gas Operator | Jun 2026 |
| 626 | Blue Devil Exploration LLC | Tulsa, OK 74103-4217 | Oil & Gas Operator | Jan 2024 |
| 627 | Blue Dolphin Production LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Jun 2026 |
| 628 | Blue Grass Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | May 2026 |
| 629 | Blue Quail Oil & Gas Inc | Yukon, OK 73099 | Oil & Gas Operator | Dec 2004 |
| 630 | Blue Star Energy, Inc. | Shawnee, OK 74802 | Oil & Gas Operator | Sep 2026 |
| 631 | Blue Water Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2026 |
| 632 | Blue Water Solutions LLC | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | Jun 2026 |
| 633 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | May 2026 |
| 634 | Bluebonnet Oil LLC | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Jun 2026 |
| 635 | Bluehawk Properties Inc | Riverside, CA 92517-1045 | Oil & Gas Operator | Dec 2016 |
| 636 | Bluemark Energy, LLC | Tulsa, OK 74135 | Oil & Gas Operator | May 2026 |
| 637 | Bluestem Resources LLC | Kerrville, TX 78028 | Oil & Gas Operator | Sep 2026 |
| 638 | Bluff LTD (The) Partnership | Woodward, OK 73801-3160 | Oil Operator | Dec 1999 |
| 639 | Bluff Oil Corporation | Newkirk, OK 74647 | Oil & Gas Operator | Jan 2013 |
| 640 | BLX Inc | Edmond, OK 73013 | Oil & Gas Operator | Jun 2026 |
| 641 | BMC Petroleum Inc | Enid, OK 73701-2700 | Oil & Gas Operator | Jun 2026 |
| 642 | BMR II LLC | Evergreen, CO 80439 | Oil & Gas Operator | Jan 2023 |
| 643 | BMW Group Inc (The) | Oklahoma City, OK 73120 | Oil & Gas Operator | Jan 2013 |
| 644 | Bo-MC Operating Corporation | Enid, OK 73702-1765 | Oil & Gas Operator | Mar 2018 |
| 645 | Bo-MC Resources Corporation | Enid, OK 73702-1765 | Oil & Gas Operator | Apr 2005 |
| 646 | Bob & Son Oil Company | Hennessey, OK 73742-0578 | Oil & Gas Operator | Jul 2017 |
| 647 | Bobby L Loftis | Holdenville, OK 74848 | Oil & Gas Operator | Jun 2022 |
| 648 | Bobwhite Production Company, Inc | Tulsa, OK 74112 | Oil & Gas Operator | Feb 2026 |
| 649 | Bode Public Disposal Inc | Ames, OK 73718 | Oil Operator | Dec 1994 |
| 650 | Bogie A W & Deem G A | Boynton, OK 74422 | Oil & Gas Operator | Jan 2007 |
| 651 | Bogo Energy Corporation | Oklahoma City, OK 73134-1068 | Oil & Gas Operator | Jun 2026 |
| 652 | Bohannon M H | Jennings, OK 74038-0264 | Oil Operator | Mar 2015 |
| 653 | Boje Oil Company LLC | | Oil & Gas Operator | May 2026 |
| 654 | Boland Investment Company | Turpin, OK 73950-0375 | Oil & Gas Operator | Jan 2013 |
| 655 | Bolen Russell Dba Teresa Energy | Konawa, OK 74849 | Oil Operator | May 2026 |
| 656 | Bolen, Michael D | | Oil & Gas Operator | May 2026 |
| 657 | Bolin C W | Wichita Falls, TX 76301-3354 | Oil & Gas Operator | May 1995 |
| 658 | Bolin R L | Wichita Falls, TX 76308-2829 | Oil & Gas Operator | Apr 2004 |
| 659 | Bolin R L Properties LP | Wichita Falls, TX 76308-2829 | Oil & Gas Operator | Sep 2024 |
| 660 | Bollinger M A | Chanute, KS 66720 | Oil Operator | Jun 2023 |
| 661 | Bollinger Oil Company | Tulsa, OK 74105 | Oil Operator | Aug 2018 |
| 662 | Bomber Energy LLC | Comanche, OK 73529 | Oil & Gas Operator | May 2026 |
| 663 | Bond Drilling Company | Marietta, OK 73448-0372 | Oil & Gas Operator | Apr 2017 |
| 664 | Bond Oil & Gas LLC | Marietta, OK 73448 | Oil & Gas Operator | Jun 2026 |
| 665 | Boness, Mona | | Oil Operator | Mar 2015 |
| 666 | Bonita Hydrocarbons Company | Dallas, TX 75229 | Oil & Gas Operator | Jun 2008 |
| 667 | Bonnell Frank A | Stuart, OK 74570-5514 | Oil & Gas Operator | Dec 2021 |
| 668 | Boone And Boone Oil Co | Perry, OK 73077 | Oil & Gas Operator | Mar 2008 |
| 669 | Boone Operating LLC | Oklahoma City, OK 73118-6014 | Oil & Gas Operator | Apr 2026 |
| 670 | Boosted Production LLC | Mooreland, OK 73852-0076 | Oil & Gas Operator | May 2026 |
| 671 | Booth John H Inc | Tulsa, OK 74170 | Oil Operator | Sep 2019 |
| 672 | Boradi Petroleum Corporation | Oklahoma City, OK 73102 | Oil Operator | Nov 1998 |
| 673 | Borinquen Oil Company | Tussy, OK 73088 | Oil Operator | Nov 2001 |
| 674 | Borrowed Resources LLC | Edmond, OK 73025 | Oil & Gas Operator | May 2026 |
| 675 | Bosque Energy Partners LLC | Bluff Dale, TX 76433-3511 | Oil Operator | Apr 2020 |
| 676 | Bossa Alan Dba The Land Company | Ringling, OK 73456-2088 | Oil & Gas Operator | Jul 2025 |
| 677 | Bostex Operating Company | Nocona, TX 76255 | Oil Operator | May 2026 |
| 678 | Bostick Services Corporation | Crescent, OK 73028 | Oil & Gas Operator | Jul 2026 |
| 679 | Boswell Energy Corporation | Oklahoma City, OK 73114-7401 | Oil & Gas Operator | Nov 2004 |
| 680 | Bowles Jack P F | Edmond, OK 73083-3285 | Oil & Gas Operator | Sep 2021 |
| 681 | Bowman Charles A | Nowata, OK 74048 | Oil Operator | Aug 2004 |
| 682 | Box Energy Company | Dallas, TX 75244 | Oil & Gas Operator | Jun 2003 |
| 683 | Boxie Oil Co | Asher, OK 74826-0243 | Oil & Gas Operator | Feb 2008 |
| 684 | Boyce Producing Corporation | Edmond, OK 73012-4323 | Oil & Gas Operator | Mar 2015 |
| 685 | Boyle Philip Inc | Norman, OK 73072-6913 | Oil & Gas Operator | Jun 1999 |
| 686 | Boyle Phillip Inc | Norman, OK 73072 | Oil & Gas Operator | Mar 2015 |
| 687 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2026 |
| 688 | BP Explorationinc/Ofb See #17756 | | Oil & Gas Operator | Apr 2015 |
| 689 | BPC Creditors Trust | Oklahoma City, OK 73102-8606 | Oil & Gas Operator | Jun 1998 |
| 690 | Bracken Energy Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Mar 2015 |
| 691 | Bracken Operating, L.L.C. | Perryton, TX 79070 | Oil & Gas Operator | Sep 2026 |
| 692 | Bracksieck Lloyd H | Boulder, CO 80303 | Oil & Gas Operator | Feb 2019 |
| 693 | Bradco Oil Inc | Cleveland, OK 74020 | Oil Operator | Jun 2023 |
| 694 | Braden Companies Inc | Edmond, OK 73013-3671 | Oil & Gas Operator | Jun 2026 |
| 695 | Braden-Deem Inc | Wichita, KS 67226 | Oil & Gas Operator | May 2026 |
| 696 | Bradmar Petroleum Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2015 |
| 697 | Brady Brothers | Cushing, OK 74023 | Oil Operator | Apr 2014 |
| 698 | Brady Company LLC (The) | Cushing, OK 74023 | Oil & Gas Operator | Jun 2026 |
| 699 | Brady Energy Investments LLC | Healdton, OK 73438-0788 | Oil & Gas Operator | May 2026 |
| 700 | Brady Fred D | Cleveland, OK 74020 | Oil & Gas Operator | Mar 1997 |