| 601 | KATZ | Payne County, OK | Oil & Gas Property | Nov 2015 |
| 602 | KATZ | Payne County, OK | Oil & Gas Property | Sep 2025 |
| 603 | KATZ (STRAWN) UNIT | Stonewall County, TX | Oil & Gas Property | Aug 2025 |
| 604 | KATZENSTEIN | Bradford County, PA | Gas Property | Sep 2025 |
| 605 | KATZER | Wilson County, KS | Gas Property | Jun 2025 |
| 606 | KATZER | Wilson County, KS | Oil & Gas Property | Jun 2025 |
| 607 | KATZER | Neosho County, KS | Gas Property | Jun 2025 |
| 608 | KATZFEY | Live Oak County, TX | Oil & Gas Property | Jun 2023 |
| 609 | KAUAI | Lincoln County, CO | Oil & Gas Property | Sep 2025 |
| 610 | KAUFER | Kleberg County, TX | Oil & Gas Property | Jun 2010 |
| 611 | KAUFER LEO -B- / | Kleberg County, TX | Oil & Gas Property | Apr 2024 |
| 612 | KAUFFMAN | Lasalle Parish, LA | Oil & Gas Property | Jan 2025 |
| 613 | KAUFFMAN | Clearfield County, PA | Gas Property | Dec 2024 |
| 614 | KAUFFMAN STATE UNIT C4-6 | Reeves County, TX | Oil & Gas Property | Sep 2025 |
| 615 | KAUFMAN | Armstrong County, PA | Gas Property | Dec 2024 |
| 616 | KAUFMAN | Russell County, KS | Oil Property | May 2025 |
| 617 | KAUFMAN | Kingman County, KS | Oil & Gas Property | Jun 2025 |
| 618 | KAUFMAN | Garfield County, CO | Oil & Gas Property | Sep 2025 |
| 619 | KAUFMAN | Roberts County, TX | Oil & Gas Property | Sep 2025 |
| 620 | KAUFMAN | Russell County, KS | Oil Property | Jan 2025 |
| 621 | KAUFMAN | Harvey County, KS | Oil & Gas Property | Mar 2025 |
| 622 | KAUFMAN | Allen County, KS | Oil Property | Sep 2023 |
| 623 | KAUFMAN | Tuscarawas County, OH | Oil & Gas Property | Dec 2024 |
| 624 | KAUFMAN | Major County, OK | Oil & Gas Property | Mar 2020 |
| 625 | KAUFMAN | Conway County, AR | Gas Property | Aug 2023 |
| 626 | KAUFMAN | Butler County, KS | Oil Property | Apr 2024 |
| 627 | KAUFMAN | Harvey County, KS | Oil Property | Mar 2025 |
| 628 | KAUFMAN | Ward County, TX | Oil & Gas Property | Jan 2025 |
| 629 | KAUFMAN | Russell County, KS | Oil Property | Jun 2025 |
| 630 | KAUFMAN | McPherson County, KS | Oil & Gas Property | May 2025 |
| 631 | KAUFMAN | Kingman County, KS | Oil & Gas Property | Jun 2025 |
| 632 | KAUFMAN | Harvey County, KS | Oil & Gas Property | Jun 2025 |
| 633 | KAUFMAN 'B' | Grant County, KS | Gas Property | Jun 2025 |
| 634 | KAUFMAN UNIT | Kaufman County, TX | Oil Property | Sep 2025 |
| 635 | KAUFMAN, W | Roane County, WV | Oil & Gas Property | Dec 2021 |
| 636 | KAUFMANN EAST UNIT | Bradford County, PA | Gas Property | Sep 2025 |
| 637 | KAUFMANN UNIT | Bradford County, PA | Gas Property | Sep 2025 |
| 638 | KAUK | Dewey County, OK | Oil & Gas Property | Oct 2025 |
| 639 | KAUK | Dewey County, OK | Oil & Gas Property | Oct 2023 |
| 640 | KAUK | Thomas County, KS | Oil Property | Jun 2025 |
| 641 | KAUK | Custer County, OK | Oil & Gas Property | Oct 2025 |
| 642 | KAUL & HALL OIL & GAS | Elk County, PA | Gas Property | Dec 2024 |
| 643 | KAUL & HALL SEC | Elk County, PA | Gas Property | Dec 2024 |
| 644 | KAUL & HALL SECTI | Elk County, PA | Gas Property | Dec 2024 |
| 645 | KAUP | Harper County, KS | Oil & Gas Property | Jun 2025 |
| 646 | KAUP 844-3 | Phillips County, CO | Gas Property | Sep 2023 |
| 647 | KAURI CLIFFS | Lincoln County, OK | Oil & Gas Property | Oct 2025 |
| 648 | KAUTH | Wilson County, KS | Gas Property | Jun 2025 |
| 649 | KAUTZ | Payne County, OK | Oil & Gas Property | Apr 2021 |
| 650 | KAUTZ 1 | Barton County, KS | Gas Property | Jun 2025 |
| 651 | KAVANAUGH & COLLINS | Polk County, TX | Oil & Gas Property | Sep 2025 |
| 652 | KAW 1 | Cowley County, KS | Oil Property | Jun 2025 |
| 653 | KAW LAND & CATTLE | Noble County, OK | Oil & Gas Property | Oct 2025 |
| 654 | KAWAKAMI | Weld County, CO | Oil & Gas Property | Mar 2022 |
| 655 | KAWATA | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 656 | KAWKAWLIN | Bay County, MI | Oil Property | Oct 2025 |
| 657 | KAWULOK | Sheridan County, WY | Gas Property | Apr 2012 |
| 658 | KAY 1 | Garvin County, OK | Oil & Gas Property | Sep 2025 |
| 659 | KAY 1 | Bowman County, ND | Oil & Gas Property | Oct 2025 |
| 660 | KAY 1-3 | Garvin County, OK | Oil Property | Dec 2010 |
| 661 | KAY 24-20 | Bowman County, ND | Oil & Gas Property | Oct 2025 |
| 662 | KAY 44-20 | Bowman County, ND | Oil & Gas Property | Oct 2025 |
| 663 | KAY ARNSON USA 34-35H | Williams County, ND | Oil & Gas Property | Oct 2025 |
| 664 | KAY DEVELOPMENT | Geauga County, OH | Oil & Gas Property | Dec 1994 |
| 665 | KAY RO | Sequoyah County, OK | Gas Property | Sep 2025 |
| 666 | KAY ROTHER 16-4-14 | Logan County, OK | Oil & Gas Property | Mar 2024 |
| 667 | KAY SAM | Gregg County, TX | Oil & Gas Property | Sep 2025 |
| 668 | KAY STATE | Kay County, OK | Oil & Gas Property | Oct 2025 |
| 669 | KAY, LARRY | Jackson County, WV | Gas Property | Dec 2021 |
| 670 | KAY-1893 B ULW A 1 | Live Oak County, TX | Oil & Gas Property | Sep 2025 |
| 671 | KAYA FED 4578-2-26-1 SH | Johnson County, WY | Oil & Gas Property | Oct 2025 |
| 672 | KAYCEE | Bourbon County, KS | Oil Property | Jun 2025 |
| 673 | KAYCEE 57-3-4 | Reeves County, TX | Oil & Gas Property | Sep 2025 |
| 674 | KAYCEE STATE 57-3-33 UNIT | Reeves County, TX | Oil & Gas Property | Sep 2025 |
| 675 | KAYDEN COLE 9 | Williams County, ND | Oil & Gas Property | Oct 2025 |
| 676 | KAYE 43X-4 | Dunn County, ND | Oil & Gas Property | Oct 2025 |
| 677 | KAYE FEDERAL | Dunn County, ND | Oil & Gas Property | Oct 2025 |
| 678 | KAYE USA 13-26H | McKenzie County, ND | Oil & Gas Property | Oct 2025 |
| 679 | KAYLA | Upton County, TX | Oil & Gas Property | Sep 2025 |
| 680 | KAYLA | McIntosh County, OK | Gas Property | Sep 2025 |
| 681 | KAYLA | Gray County, TX | Oil & Gas Property | Sep 2025 |
| 682 | KAYLEE | Wayne County, MS | Oil & Gas Property | Oct 2025 |
| 683 | KAYLEE ANN 32-29H | Williams County, ND | Oil & Gas Property | Oct 2025 |
| 684 | KAYLEIGH | Ector County, TX | Oil & Gas Property | Sep 2025 |
| 685 | KAYLINA 1 | Glasscock County, TX | Oil & Gas Property | Sep 2025 |
| 686 | KAYLOR | Knox County, OH | Oil & Gas Property | Dec 2012 |
| 687 | KAYRO 4 STATE COM | Eddy County, NM | Oil & Gas Property | Aug 2025 |
| 688 | KAYSER EVA | Ector County, TX | Oil & Gas Property | Aug 2025 |
| 689 | KAYSER, KENNETH | Lewis County, WV | Oil & Gas Property | Dec 2021 |
| 690 | KAZBEK UNIT | Karnes County, TX | Oil & Gas Property | Sep 2025 |
| 691 | KAZEE | Elliott County, KY | Oil & Gas Property | Jun 2020 |
| 692 | KAZEE, GEORGE | Elliott County, KY | Oil & Gas Property | Sep 2011 |
| 693 | KAZMIR | Burleson County, TX | Oil & Gas Property | Aug 2025 |
| 694 | KB 34-8H | Dunn County, ND | Oil & Gas Property | Oct 2025 |
| 695 | KBBB | Lasalle Parish, LA | Oil Property | Dec 2024 |
| 696 | KBL 1 | Weld County, CO | Oil & Gas Property | Sep 2025 |
| 697 | KC 5-36D | Uintah County, UT | Oil & Gas Property | Sep 2025 |
| 698 | KC PREMIUM 56-T2-48 1H | Reeves County, TX | Oil & Gas Property | Sep 2025 |
| 699 | KC UNIT | Karnes County, TX | Oil & Gas Property | Sep 2025 |
| 700 | KC-DUSTIN DAVID 17-20H MB | Williams County, ND | Oil & Gas Property | Oct 2025 |