| 601 | Buck Paul J | | Oil & Gas Operator | Feb 1995 |
| 602 | Buck, Paul Jordan | Sedan, KS 67361 | Oil & Gas Operator | Dec 2023 |
| 603 | Buckeye Corporat | | Oil Operator | Dec 1996 |
| 604 | Buckeye West, LLC | Wooster, OH 44691 | Oil Operator | Dec 2023 |
| 605 | Buddie Sallee | Humboldt, KS 66748 | Oil Operator | Dec 2002 |
| 606 | Buffalo Oil & Gas LLC | Oxford, KS 67119 | Oil & Gas Operator | Dec 2023 |
| 607 | Buffalo Operating Corporation | Westminister, CO 80234 | Oil & Gas Operator | Dec 2001 |
| 608 | Buffalo Resources LLC | Woodward, OK 73801 | Oil & Gas Operator | Dec 2023 |
| 609 | Bullseye Oilfield Service | Cunningham, KS 67035 | Oil Operator | Apr 2023 |
| 610 | Bullseye Petrole | | Oil Operator | Oct 1992 |
| 611 | Bullseye Petroleum, Inc. | Wichita, KS 67230 | Oil Operator | Oct 2023 |
| 612 | Burch Exploratio | | Oil Operator | Mar 1991 |
| 613 | Burdett, Alfred | Sedan, KS 67361 | Oil Operator | Aug 2008 |
| 614 | Buried Hills Prod. Co., Inc. | Midvale, UT 84047 | Oil Operator | Dec 2006 |
| 615 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2024 |
| 616 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 617 | Burnett Corporat | | Oil & Gas Operator | Oct 1993 |
| 618 | Burns WM J | | Oil Operator | Jun 1994 |
| 619 | Burris Energy LLC | Burlington, KS 66839 | Oil & Gas Operator | Sep 2016 |
| 620 | Burris Ronald/Si | | Oil Operator | Jun 1992 |
| 621 | Burris, J. R. | Manhattan, KS 66502 | Oil Operator | Dec 2019 |
| 622 | Burton Oil Produ | | Oil Operator | Jan 1985 |
| 623 | Butler Petroleum LLC | Van Alstyne, TX 75495 | Oil Operator | May 2020 |
| 624 | Butler, Harold F. | Independence, KS 67301 | Oil Operator | Sep 2002 |
| 625 | BWC Energy LLC | Edgerton, KS 66021 | Oil Operator | Dec 2023 |
| 626 | Byers Clarice An | | Oil Operator | Nov 1988 |
| 627 | C & B Operating Inc. | St John, KS 67576 | Oil & Gas Operator | Dec 2023 |
| 628 | C & C Oil | | Oil & Gas Operator | Jan 2004 |
| 629 | C & C Oil & Gas | Ranger, TX 76470 | Oil & Gas Operator | Apr 2024 |
| 630 | C & C Tank Service, Inc. | Sterling, KS 67579 | Oil Operator | Oct 2020 |
| 631 | C & E Oil, LLC | Grenola, KS 67346 | Oil Operator | Nov 2021 |
| 632 | C & E Prod Incor | | Oil Operator | Nov 1996 |
| 633 | C & F Ranch LLC | Iola, KS 66749 | Oil Operator | Dec 2023 |
| 634 | C & G Drilling, Inc. | Eureka, KS 67045 | Oil Operator | Dec 2023 |
| 635 | C & G Oil Compan | | Oil & Gas Operator | Dec 1989 |
| 636 | C & H Energy LLC | Blue Mound, KS 66010 | Oil Operator | Nov 2009 |
| 637 | C & J Production LLC | Marion, KS 66861 | Oil & Gas Operator | Dec 2023 |
| 638 | C & J Pumping, Inc. | Sylvia, KS 67581 | Oil & Gas Operator | Dec 2009 |
| 639 | C & K Operating LLC | Kingman, KS 67068 | Oil & Gas Operator | Dec 2023 |
| 640 | C & R Drilling C | | Oil Operator | Aug 1994 |
| 641 | C & R Oil | | Oil Operator | Dec 2023 |
| 642 | C & R Petroleum Co. | Duncan, OK 73533-1341 | Oil & Gas Operator | Jan 2024 |
| 643 | C & R Well Servi | | Oil Operator | Sep 1996 |
| 644 | C & R Well Service, A General Partnership | Garnett, KS 66032 | Oil Operator | Dec 2009 |
| 645 | C & S Oil | | Oil Operator | Dec 2019 |
| 646 | C & S Oil Company | Odessa, TX 79763 | Oil & Gas Operator | Nov 2019 |
| 647 | C & S Oil Company, LLC | Russell, KS 67665 | Oil Operator | Nov 2023 |
| 648 | C & S Well Servi | | Oil & Gas Operator | Nov 1995 |
| 649 | C & S Well Servicing Co. | Lyons, KS 67554 | Oil & Gas Operator | Jul 2000 |
| 650 | C & W Oil | Neodesha, KS 66757 | Oil Operator | Dec 2022 |
| 651 | C A P Operating | | Oil Operator | Sep 1992 |
| 652 | C C & S Oil Oper | | Oil Operator | Apr 1983 |
| 653 | C D Oil | Wellsville, KS 66092 | Oil Operator | Aug 1998 |
| 654 | C F Oil - Frazie | | Oil Operator | Dec 1994 |
| 655 | C G Oil, Inc. | Victoria, KS 67671 | Oil Operator | Dec 2023 |
| 656 | C K Oil Company | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2023 |
| 657 | C M T Petroleum | | Oil Operator | Jul 1995 |
| 658 | C M X Incorporat | | Oil & Gas Operator | Dec 1996 |
| 659 | C N B Enterprises | Yates Center, KS 66783 | Oil & Gas Operator | Jan 2009 |
| 660 | C R A C O Incorp | | Oil Operator | May 1988 |
| 661 | C W Oil Producer | | Oil Operator | Oct 1998 |
| 662 | C&D Supply | Cherokee, OK 73728-5817 | Oil & Gas Operator | Dec 2023 |
| 663 | C-V Oil Company | Memphis, TN 38103 | Oil Operator | Jun 1998 |
| 664 | C. D. Oil, Inc. | Wellsville, KS 66092 | Oil Operator | Dec 2009 |
| 665 | C. F. Oil, A General Partnership | Lake Lotawana, MO 64086 | Oil Operator | Dec 2023 |
| 666 | C. H. Todd, Inc. | Wichita, KS 67212 | Oil & Gas Operator | Feb 2023 |
| 667 | C.D. Operating Company, Inc. | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2015 |
| 668 | C12 Kansas Oil, LLC | Denver, CO 80202 | Oil Operator | Dec 2009 |
| 669 | C3oil, LLC | New Strawn, KS 66839 | Oil Operator | Dec 2023 |
| 670 | C5 Energy LLC | Collinsville, OK 74021 | Oil & Gas Operator | Dec 2019 |
| 671 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Dec 2023 |
| 672 | Cabot Petroleum | | Oil & Gas Operator | Oct 1996 |
| 673 | Caerus Kansas LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 674 | Caerus Washco LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2024 |
| 675 | Cahoj, H. Drilling | McDonald, KS 67745 | Oil Operator | Jan 2000 |
| 676 | Cain, Jim | Great Bend, KS 67530 | Oil Operator | Feb 2009 |
| 677 | Cal Oil | | Oil Operator | Jul 1986 |
| 678 | Caldwell Entr In | | Oil Operator | Dec 1993 |
| 679 | Calgary Energy LLC | Collinsville, OK 74021 | Oil & Gas Operator | Jan 2024 |
| 680 | Calvin Explorati | | Oil & Gas Operator | Oct 1991 |
| 681 | Calvin Noah, LLC | Valley Center, KS 67147 | Oil Operator | Dec 2023 |
| 682 | Cam Development | | Oil & Gas Operator | Dec 1990 |
| 683 | Cambern, Rex | Montgomery, TX 77356 | Oil Operator | Jan 1996 |
| 684 | Cambria Corporation | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2019 |
| 685 | Cambron, Paul L. | Ness City, KS 67560 | Oil & Gas Operator | Dec 2019 |
| 686 | Camio Enterprises, LLC | Augusta, KS 67010 | Oil Operator | Dec 2023 |
| 687 | Camio Oil Compan | | Oil & Gas Operator | Apr 1991 |
| 688 | Camio Oil Company | | Oil Operator | Dec 2004 |
| 689 | Campbell Robert | | Oil & Gas Operator | Aug 1990 |
| 690 | Campbell, Robert E. | Wichita, KS 67206 | Oil & Gas Operator | May 2019 |
| 691 | Camwest Limited Partnership | Denver, CO 80202 | Oil & Gas Operator | Apr 2004 |
| 692 | Canaday Oil Corp | Goddard, KS 67052 | Oil & Gas Operator | Dec 2023 |
| 693 | Cannan Calvin B | | Oil Operator | Jul 1991 |
| 694 | Cannon Oil Co. | | Oil Operator | Dec 2009 |
| 695 | Canyon Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | Apr 2024 |
| 696 | Cap Operating Inc. | Borger, TX 79008 | Oil & Gas Operator | Apr 2024 |
| 697 | Capco Resource Corporation | Orange,, CA 92869 | Oil Operator | Sep 2007 |
| 698 | Capital Energy Group, Inc. | Bardonia, NY 10954 | Oil Operator | Jan 1998 |
| 699 | Captain'S Oil Inc. | Louisburg, KS 66053 | Oil Operator | Sep 2003 |
| 700 | Cara Ventures In | | Oil Operator | May 1995 |