| 601 | Jennings Drillin | | Oil & Gas Operator | Jul 1988 |
| 602 | Jennings DRLG Co, Inc | | Oil & Gas Operator | Dec 1997 |
| 603 | Jennings Exploration Company | Beeville, TX 78102 | Oil & Gas Operator | Feb 2024 |
| 604 | Jennings Holdings, LLC | | Oil & Gas Operator | Dec 2024 |
| 605 | Jennings Oil Of VIvian LLC | | Oil Operator | Jan 2025 |
| 606 | Jennings Petroleum And Enveron Corp | | Oil & Gas Operator | Mar 2017 |
| 607 | Jennings Petroleum Corp | | Oil & Gas Operator | Dec 1988 |
| 608 | Jericho Energy, Inc | Lipan, TX 76462 | Gas Operator | Apr 2025 |
| 609 | Jericho Exploration | Weleetka, OK 74880-0704 | Oil & Gas Operator | Jan 2025 |
| 610 | Jerico Resources LLC | Seminole, OK 74868-6538 | Oil & Gas Operator | Apr 2020 |
| 611 | Jernigan Steve I | | Oil Operator | Mar 1993 |
| 612 | Jerome K & Rosemary Graber | Jamestown, PA 16134 | Oil & Gas Operator | Dec 2022 |
| 613 | Jeron Oil And Gas Inc | Denison, TX 75020 | Oil & Gas Operator | Jun 2000 |
| 614 | Jerry Barnett & Son | Graham, TX 76450 | Oil Operator | Sep 2024 |
| 615 | Jerry Hess Operating Company | Muenster, TX 76252 | Oil Operator | Dec 2008 |
| 616 | Jerry J. Tuma | | Oil & Gas Operator | Mar 1985 |
| 617 | Jerry Malmay | | Oil Operator | Aug 2011 |
| 618 | Jerry Moore Inc | Hartville, OH 44632 | Oil & Gas Operator | Dec 2023 |
| 619 | Jerry Oil Co. | Riverside, IL 60546 | Oil & Gas Operator | Dec 1990 |
| 620 | Jerry P Ogden | | Oil & Gas Operator | Dec 2008 |
| 621 | Jerry Patterson Oil | | Oil Operator | May 2004 |
| 622 | Jerry R. Craig | | Oil & Gas Operator | Dec 2012 |
| 623 | Jerry Sanner Oil Properties Inc | Enid, OK 73701 | Oil & Gas Operator | Feb 2025 |
| 624 | Jerry Scott Drilling Company Inc | Ada, OK 74821 | Oil & Gas Operator | Dec 2024 |
| 625 | Jerry W Guy & Thurman F Duncan | Hobbs, NM 88241 | Oil & Gas Operator | May 2016 |
| 626 | Jesam Energy LLC | Glenville, WV 26351 | Oil & Gas Operator | Dec 2021 |
| 627 | Jesmar Energy Inc | Holbrook, PA 15341-1318 | Oil & Gas Operator | Dec 2024 |
| 628 | Jess Energy Company | Tyler, TX 75710 | Oil & Gas Operator | Sep 1997 |
| 629 | Jesse Franklin Rosett | | Oil & Gas Operator | Jan 1981 |
| 630 | Jesse Operating LLC | Konawa, OK 74849-4917 | Oil Operator | Jul 2024 |
| 631 | Jesse'S Oilfield Service | Okemah, OK 74859-0061 | Oil & Gas Operator | Sep 2014 |
| 632 | Jesus Maria Corporation | San Antonio, TX 78216 | Oil Operator | Apr 2025 |
| 633 | Jeswood Productions, LLC | Denton, TX 76206 | Oil & Gas Operator | Apr 2025 |
| 634 | Jet Black Oil, Inc. | Katy, TX 77494 | Oil Operator | Apr 2025 |
| 635 | Jet Drilling Cor | | Oil Operator | Oct 1995 |
| 636 | Jet Drilling Corp. | Scottsdale, AZ 85252 | Oil & Gas Operator | Dec 1996 |
| 637 | Jet Exploration 1995-1 LLC | | Gas Operator | Jan 2000 |
| 638 | Jet Exploration Inc | | Oil & Gas Operator | May 1998 |
| 639 | Jet Oil Co12/Ofb See 18649 | | Oil & Gas Operator | Jul 2007 |
| 640 | Jet Oil Corp | | Oil & Gas Operator | Feb 1999 |
| 641 | Jet Oil Producers | Coldspring, TX 77331 | Oil & Gas Operator | Mar 2008 |
| 642 | Jet Oil Producers, Inc. | Coldspring, TX 77331 | Oil & Gas Operator | Apr 2025 |
| 643 | Jet Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2002 |
| 644 | Jet-Star Co. | Gainesville, TX 76240 | Oil & Gas Operator | Apr 2025 |
| 645 | Jet-Tex Oil & Gas, LLC | Rockdale, TX 76567 | Oil Operator | Apr 2025 |
| 646 | Jetco Exploration | Victoria, TX 77903 | Oil & Gas Operator | May 2007 |
| 647 | Jeter Drilling Production | Del Rio, TX 78840 | Oil & Gas Operator | Apr 2025 |
| 648 | Jetgo Oil Compan | | Oil & Gas Operator | Jan 1995 |
| 649 | Jetson Operating Inc | Ada, OK 74820 | Oil & Gas Operator | Sep 2024 |
| 650 | Jett Drilling Co. | | Oil & Gas Operator | Feb 1984 |
| 651 | Jett Oil LLC | Warren, PA 16365-4366 | Oil & Gas Operator | Dec 2024 |
| 652 | Jetta Operating Appalachia, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2023 |
| 653 | Jetta Operating Company Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 654 | Jetta Permian, LP | Midland, TX 79701 | Oil & Gas Operator | Jun 2021 |
| 655 | Jettison, Inc. | | Oil & Gas Operator | Mar 2025 |
| 656 | Jew-Del Oil & Ga | | Gas Operator | Dec 1994 |
| 657 | Jewell Consulting Inc | Bixby, OK 74008 | Oil & Gas Operator | Dec 2022 |
| 658 | Jezek, Ernest D. | Holyrood, KS 67450 | Oil Operator | Dec 2019 |
| 659 | JF Trust | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 2024 |
| 660 | JFC Construction LLC | East Bernard, TX 77435 | Oil Operator | Apr 2025 |
| 661 | JFD,Inc | Houston, TX 77041-6914 | Oil & Gas Operator | Feb 2000 |
| 662 | JFW Incorporated | Plevna, KS 67568 | Oil & Gas Operator | Oct 2006 |
| 663 | JGC Energy Development (USA) Inc. | | Oil & Gas Operator | Aug 2014 |
| 664 | JGC Oil Co. | Austin, TX 78732 | Oil & Gas Operator | Apr 2025 |
| 665 | JGK Oil, Inc. | Chanute, KS 66720 | Oil Operator | Aug 1998 |
| 666 | Jhatco Inc | Enid, OK 73701 | Oil & Gas Operator | Feb 2025 |
| 667 | JHC II LLC | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2024 |
| 668 | JHC Oil & Gas Inc | Fulshear, TX 77441 | Oil Operator | Apr 2025 |
| 669 | JHL Energy, Inc. | Wichita, KS 67209 | Oil & Gas Operator | Apr 2016 |
| 670 | JHP Operating, LLC | Dallas, TX 75225 | Oil & Gas Operator | Apr 2025 |
| 671 | JHS Energy, Inc | Denver, CO 80222 | Oil & Gas Operator | Dec 2024 |
| 672 | JHS Oilfield Services LLC | Dallas, TX 75206 | Oil Operator | Apr 2025 |
| 673 | Ji Energy LLC | Midland, TX 79707 | Gas Operator | Apr 2025 |
| 674 | Jiahe Energy, LLC | Katy, TX 77450 | Gas Operator | Apr 2025 |
| 675 | Jicarilla Energy Co | Farmington, NM 87401 | Oil & Gas Operator | Feb 2025 |
| 676 | Jico Exploration Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Nov 2004 |
| 677 | Jil Oil Corp. | San Antonio, TX 78279 | Oil & Gas Operator | Apr 2025 |
| 678 | Jilpetco, Inc. | Fort Worth, TX 76121 | Oil & Gas Operator | Apr 2025 |
| 679 | Jim Austin | | Oil & Gas Operator | Jul 1981 |
| 680 | Jim Austin Et Al | | Gas Operator | Jul 1981 |
| 681 | Jim Bennett Oil Co Inc | | Oil & Gas Operator | Mar 2019 |
| 682 | Jim Clower Inc | Beaver, OK 73932 | Oil & Gas Operator | Jan 2025 |
| 683 | Jim Darnell Dba Jim Darnell Operating Co | Okmulgee, OK 74447-8988 | Oil & Gas Operator | Feb 2024 |
| 684 | Jim Graham | | Oil & Gas Operator | Jan 2018 |
| 685 | Jim Joel Elliott | | Oil Operator | Nov 1999 |
| 686 | Jim Murphy Buick GMC, Inc. | Depew, NY 14043 | Gas Operator | Dec 2023 |
| 687 | Jim Pierce | Artesia, NM 88210 | Oil & Gas Operator | Apr 2022 |
| 688 | Jim Production | Jacksboro, TX 76458 | Oil & Gas Operator | Jan 2010 |
| 689 | Jim Snyder, Inc. | Hamilton, KS 66853 | Oil Operator | Dec 2024 |
| 690 | Jim V. Haddox | | Gas Operator | Dec 2010 |
| 691 | Jim'S Operating Service | Dewey, OK 74029 | Oil Operator | Dec 1996 |
| 692 | Jim-Bob Oil Company | San Angelo, TX 76901 | Oil & Gas Operator | Dec 2003 |
| 693 | Jim-Co Drilling Et Al | | Oil & Gas Operator | Mar 1991 |
| 694 | Jimco Energy Inc. | Stockdale, TX 78160 | Oil & Gas Operator | Apr 2025 |
| 695 | Jimco Oil Company, Inc. | Electra, TX 76360 | Oil & Gas Operator | Jun 2019 |
| 696 | Jimenez Well Service, LLC | Kingman, KS 67068 | Oil Operator | Jan 2016 |
| 697 | Jimgas Inc | Magnolia, TX 77355 | Oil & Gas Operator | May 2016 |
| 698 | Jimmie G. Meador | | Oil & Gas Operator | Apr 1980 |
| 699 | Jimmy D Berry | | Gas Operator | Mar 1983 |
| 700 | Jimmy Earl Wilson | Okemah, OK 74859 | Gas Operator | Jan 2025 |