| 601 | IRISH | San Juan County, NM | Gas Property | Jul 2026 |
| 602 | IRISH CREEK | Moffat County, CO | Oil & Gas Property | Aug 2012 |
| 603 | IRISH HILLS | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 604 | IRISH HILLS YESO | Eddy County, NM | Oil & Gas Property | Aug 2016 |
| 605 | IRISH PUG | Greene County, PA | Gas Property | Mar 2026 |
| 606 | IRISH USA 41-25TFH | McKenzie County, ND | Oil & Gas Property | Jun 2026 |
| 607 | IRISH WHISKEY FEDERAL | Eddy County, NM | Oil & Gas Property | Apr 2024 |
| 608 | IRISHTOWN | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 609 | IRMA | Moore County, TX | Oil Property | Jun 2026 |
| 610 | IRMA | Upton County, TX | Oil & Gas Property | Jun 2026 |
| 611 | IRMA | Creek County, OK | Oil & Gas Property | Jun 2026 |
| 612 | IRMA | Kern County, CA | Oil & Gas Property | Jul 2026 |
| 613 | IRMA SMITH | Pawnee County, KS | Oil Property | Jul 2025 |
| 614 | IRMA UNIT | Ector County, TX | Oil & Gas Property | Jun 2026 |
| 615 | IRON BEAR | Roosevelt County, MT | Oil & Gas Property | Jun 2015 |
| 616 | IRON BELLY 1-25 | Carter County, OK | Oil & Gas Property | Jul 2026 |
| 617 | IRON BRIDGE TANNEHILL A SAND UNT | Dickens County, TX | Oil & Gas Property | Jun 2026 |
| 618 | IRON CITY STATE | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 619 | IRON CURTAIN 20-13-10 | Major County, OK | Oil & Gas Property | Jun 2026 |
| 620 | IRON DUKE | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 621 | IRON DUKE | Madison County, TX | Oil & Gas Property | Jun 2026 |
| 622 | IRON DUKE (ALLOCATION) | Madison County, TX | Oil & Gas Property | Jun 2026 |
| 623 | IRON EAGLE DEEP UNIT | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 624 | IRON EAGLE UNIT | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 625 | IRON HORSE | Throckmorton County, TX | Oil & Gas Property | Jun 2026 |
| 626 | IRON HORSE | McKenzie County, ND | Oil & Gas Property | Jun 2026 |
| 627 | IRON HORSE | Fremont County, WY | Oil & Gas Property | Jul 2026 |
| 628 | IRON HORSE | Fremont County, WY | Oil & Gas Property | Sep 2025 |
| 629 | IRON ISLANDS 11 7 | Eddy County, NM | Oil & Gas Property | Jun 2026 |
| 630 | IRON MAN | Washington County, PA | Gas Property | Jun 2026 |
| 631 | IRON MASK 36_25-14N-8W | Canadian County, OK | Oil & Gas Property | Jun 2026 |
| 632 | IRON MIKE | Reeves County, TX | Oil & Gas Property | May 2026 |
| 633 | IRON MOUNTAIN | Polk County, TX | Oil & Gas Property | Jun 2026 |
| 634 | IRON POINT UNIT HOTCHKISS 1291 13-24D H1 | Delta County, CO | Oil & Gas Property | May 2026 |
| 635 | IRON POST | Creek County, OK | Gas Property | Aug 2022 |
| 636 | IRON RUN | Forest County, PA | Oil & Gas Property | Dec 2025 |
| 637 | IRON SNAKE 1912 | Pecos County, TX | Oil & Gas Property | Jun 2026 |
| 638 | IRON THRONE FEDERAL COM | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 639 | IRON WARRIOR | Belmont County, OH | Gas Property | Jun 2026 |
| 640 | IRONBANK | Williams County, ND | Oil & Gas Property | Jun 2026 |
| 641 | IRONBORN 34-27 | Dawson County, TX | Oil & Gas Property | Jun 2026 |
| 642 | IRONHORSE 35 36 FEDERAL STATE COM | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 643 | IRONHORSE 35 FEDERAL COM | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 644 | IRONHOUSE 19 STATE COM | Lea County, NM | Oil & Gas Property | Jun 2026 |
| 645 | IRONHOUSE 2 | Lea County, NM | Oil & Gas Property | Jun 2026 |
| 646 | IRONHOUSE 3 | Lea County, NM | Oil & Gas Property | May 2026 |
| 647 | IRONS | Montague County, TX | Oil & Gas Property | Oct 2016 |
| 648 | IRONS | Belmont County, OH | Oil & Gas Property | Jun 2026 |
| 649 | IRONSIDE 16-3TFH | Dunn County, ND | Oil & Gas Property | Jun 2026 |
| 650 | IRONWOOD | Frio County, TX | Oil & Gas Property | Jun 2026 |
| 651 | IROQUIS | Kern County, CA | Oil & Gas Property | Jul 2026 |
| 652 | IROQUOIS STATE UNIT | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 653 | IRRITABLE 22 STATE COM | Eddy County, NM | Oil & Gas Property | Jun 2026 |
| 654 | IRSIK | Gray County, KS | Oil Property | Aug 1990 |
| 655 | IRSIK | Hodgeman County, KS | Oil Property | Feb 2026 |
| 656 | IRSIK EQUITIES | Gray County, KS | Oil Property | Nov 2025 |
| 657 | IRSIK FEED YARD | Gray County, KS | Oil Property | Jun 1988 |
| 658 | IRSIK STATE UNIT | Gray County, KS | Oil Property | Jun 1988 |
| 659 | IRSIK-FINNEY | Finney County, KS | Oil Property | May 2026 |
| 660 | IRT 53 | Pecos County, TX | Oil Property | Jun 2026 |
| 661 | IRT 6 | Pecos County, TX | Oil & Gas Property | Jul 2025 |
| 662 | IRVEN JOHN | Blaine County, OK | Oil & Gas Property | Jun 2026 |
| 663 | IRVEN JOHN 1710 | Blaine County, OK | Oil & Gas Property | Jun 2026 |
| 664 | IRVIN | Ellis County, OK | Oil & Gas Property | Jun 2026 |
| 665 | IRVIN | Ellis County, KS | Oil Property | May 2026 |
| 666 | IRVIN | Jones County, TX | Oil & Gas Property | Jun 2026 |
| 667 | IRVIN | Hardeman County, TX | Oil & Gas Property | Jun 2026 |
| 668 | IRVIN | Ellis County, KS | Oil Property | May 2026 |
| 669 | IRVIN | Ellis County, OK | Oil & Gas Property | Jun 2026 |
| 670 | IRVIN | Major County, OK | Oil & Gas Property | Jun 2026 |
| 671 | IRVIN | Indiana County, PA | Oil & Gas Property | Dec 2025 |
| 672 | IRVIN | Knox County, OH | Oil & Gas Property | Dec 2025 |
| 673 | IRVIN | Ellis County, KS | Oil Property | Oct 2025 |
| 674 | IRVIN | Gladwin County, MI | Oil Property | Jul 2026 |
| 675 | IRVIN | La Salle County, TX | Oil & Gas Property | Jun 2026 |
| 676 | IRVIN "A" | Midland County, TX | Oil & Gas Property | Jun 2026 |
| 677 | IRVIN (M-591) | Clearfield County, PA | Gas Property | Dec 2025 |
| 678 | IRVIN BOL | Kingfisher County, OK | Oil & Gas Property | Nov 2025 |
| 679 | IRVIN E SWEITZER | Clarion County, PA | Gas Property | Dec 2025 |
| 680 | IRVIN F-G ALLOC | La Salle County, TX | Oil & Gas Property | Jun 2026 |
| 681 | IRVIN F-G-IMN ALLOC | La Salle County, TX | Oil & Gas Property | Jun 2026 |
| 682 | IRVIN FAMILY | La Salle County, TX | Oil & Gas Property | Jun 2026 |
| 683 | IRVIN GAS UNIT | Freestone County, TX | Oil & Gas Property | Jun 2026 |
| 684 | IRVIN H-I ALLOCATION | La Salle County, TX | Oil & Gas Property | Jun 2026 |
| 685 | IRVIN L | Ellis County, KS | Oil Property | Apr 2026 |
| 686 | IRVIN LANGFORD | Monroe County, AL | Oil & Gas Property | Jun 1997 |
| 687 | IRVIN M-589 | Clearfield County, PA | Gas Property | Dec 2025 |
| 688 | IRVIN MINERALS NORTH | La Salle County, TX | Oil & Gas Property | Jun 2026 |
| 689 | IRVIN MINERALS SOUTH | La Salle County, TX | Oil & Gas Property | Jun 2026 |
| 690 | IRVIN SISTERS | Ochiltree County, TX | Oil & Gas Property | Jun 2026 |
| 691 | IRVIN WALL STATE COM | Lea County, NM | Oil & Gas Property | Jun 2026 |
| 692 | IRVIN-CONLEY "D" | Hardeman County, TX | Oil & Gas Property | Jun 2026 |
| 693 | IRVINE | Fayette County, PA | Gas Property | Dec 2025 |
| 694 | IRVINE | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 695 | IRVINE | Stafford County, KS | Oil & Gas Property | Mar 2026 |
| 696 | IRVINE | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 697 | IRVINE | Parker County, TX | Oil & Gas Property | Jun 2026 |
| 698 | IRVINE | Weld County, CO | Oil & Gas Property | May 2026 |
| 699 | IRVINE BRO | Natrona County, WY | Oil Property | Jul 2026 |
| 700 | IRVINE CHARLES | Navarro County, TX | Oil & Gas Property | Jun 2026 |