| 701 | IRWIN | Muskingum County, OH | Oil & Gas Property | Dec 2022 |
| 702 | IRWIN | Medina County, OH | Oil & Gas Property | Dec 2020 |
| 703 | IRWIN | Throckmorton County, TX | Oil & Gas Property | Mar 2026 |
| 704 | IRWIN | Woods County, OK | Oil & Gas Property | Nov 2019 |
| 705 | IRWIN | Nacogdoches County, TX | Oil & Gas Property | Mar 2026 |
| 706 | IRWIN 1 | Williams County, ND | Oil & Gas Property | Apr 2026 |
| 707 | IRWIN 13 FEDERAL | Eddy County, NM | Oil & Gas Property | Mar 2026 |
| 708 | IRWIN 23 14 FEDERAL | Eddy County, NM | Oil & Gas Property | Mar 2026 |
| 709 | IRWIN 6-65 23-11 | Elbert County, CO | Oil & Gas Property | Mar 2026 |
| 710 | IRWIN A 1 | Leon County, TX | Oil & Gas Property | Mar 2026 |
| 711 | IRWIN BEN | Nacogdoches County, TX | Oil & Gas Property | Mar 2026 |
| 712 | IRWIN ESTATE 12704 | Washington County, PA | Gas Property | Mar 2026 |
| 713 | IRWIN I | McKean County, PA | Oil Property | Dec 2019 |
| 714 | IRWIN STANLEY | Throckmorton County, TX | Oil & Gas Property | Feb 2026 |
| 715 | IRWIN, JOHN R | Medina County, TX | Oil & Gas Property | Jun 2013 |
| 716 | IRWIN-BERYLWOOD | Ventura County, CA | Oil & Gas Property | Mar 2026 |
| 717 | ISA 1H | Lycoming County, PA | Gas Property | Mar 2026 |
| 718 | ISA 2H | Lycoming County, PA | Gas Property | Mar 2026 |
| 719 | ISA 3H | Lycoming County, PA | Gas Property | Mar 2026 |
| 720 | ISA 7H | Lycoming County, PA | Gas Property | Mar 2026 |
| 721 | ISAAC | Meade County, KS | Oil & Gas Property | Nov 2001 |
| 722 | ISAAC | Hardin County, TX | Oil & Gas Property | Mar 2026 |
| 723 | ISAAC | Nacogdoches County, TX | Oil & Gas Property | Mar 2026 |
| 724 | ISAAC | Pawnee County, KS | Oil Property | Jan 2026 |
| 725 | ISAAC | Magoffin County, KY | Gas Property | Mar 2024 |
| 726 | ISAAC | Beaver County, OK | Oil & Gas Property | Feb 2026 |
| 727 | ISAAC RAWLS | Caddo Parish, LA | Oil Property | Jan 2025 |
| 728 | ISAAC TAYLOR | Grady County, OK | Oil & Gas Property | Feb 2026 |
| 729 | ISAACS | Seminole County, OK | Oil Property | Jan 2013 |
| 730 | ISAACS | Roberts County, TX | Oil & Gas Property | Mar 2026 |
| 731 | ISAACS | Hemphill County, TX | Oil & Gas Property | Mar 2026 |
| 732 | ISAACS | Hemphill County, TX | Oil & Gas Property | Mar 2026 |
| 733 | ISAACS | Beaver County, OK | Oil & Gas Property | Feb 2026 |
| 734 | ISAACS DAVID Q | Hemphill County, TX | Oil & Gas Property | Mar 2026 |
| 735 | ISAACS JOHN | Hemphill County, TX | Oil & Gas Property | Mar 2026 |
| 736 | ISAACS UNIT 2H | Butler County, PA | Oil & Gas Property | Mar 2026 |
| 737 | ISAACS-SIMPSON | Hemphill County, TX | Oil & Gas Property | Mar 2026 |
| 738 | ISAAK | Karnes County, TX | Oil & Gas Property | Mar 2026 |
| 739 | ISABEL | Caddo Parish, LA | Oil & Gas Property | Dec 2024 |
| 740 | ISABEL | Big Horn County, WY | Oil & Gas Property | Mar 2026 |
| 741 | ISABEL | Kern County, CA | Oil & Gas Property | Mar 2026 |
| 742 | ISABEL | Sherman County, KS | Gas Property | Feb 2026 |
| 743 | ISABEL | Ector County, TX | Oil & Gas Property | Mar 2026 |
| 744 | ISABEL | Jefferson County, PA | Oil & Gas Property | Dec 2025 |
| 745 | ISABEL A | San Juan County, NM | Gas Property | Mar 2026 |
| 746 | ISABEL REPINE | Indiana County, PA | Gas Property | Dec 2025 |
| 747 | ISABELLA | Gonzales County, TX | Oil & Gas Property | Apr 2003 |
| 748 | ISABELLA FEDERAL 6093 42-24H | Burke County, ND | Oil & Gas Property | Apr 2026 |
| 749 | ISABELLA MAGNESS | Sabine Parish, LA | Oil Property | Dec 2024 |
| 750 | ISABELLA POWELL | Meigs County, OH | Oil & Gas Property | Dec 2025 |
| 751 | ISABELLA TTT 41-26HU | Mountrail County, ND | Oil & Gas Property | Apr 2026 |
| 752 | ISABELLE | Finney County, KS | Oil Property | Feb 2026 |
| 753 | ISABELLE | Karnes County, TX | Oil & Gas Property | Mar 2026 |
| 754 | ISALY | Monroe County, OH | Oil & Gas Property | Mar 2026 |
| 755 | ISBELL | Garfield County, OK | Oil & Gas Property | Feb 2026 |
| 756 | ISBELL | Carter County, OK | Oil Property | Nov 2025 |
| 757 | ISBELL | Bradford County, PA | Gas Property | Mar 2026 |
| 758 | ISBELL | Johnson County, TX | Oil & Gas Property | Mar 2026 |
| 759 | ISBELL 21 | Parker County, TX | Oil & Gas Property | Mar 2026 |
| 760 | ISBELL HORIZONTAL UNIT | Midland County, TX | Oil & Gas Property | Mar 2026 |
| 761 | ISBELL-FRY | Jones County, TX | Oil Property | Sep 2024 |
| 762 | ISBILL | McClain County, OK | Oil & Gas Property | Nov 2025 |
| 763 | ISCH | Roger Mills County, OK | Oil & Gas Property | Feb 2026 |
| 764 | ISCO A | Los Angeles County, CA | Oil & Gas Property | Jan 1993 |
| 765 | ISEMAN | Armstrong County, PA | Gas Property | Dec 2025 |
| 766 | ISENBART | Woods County, OK | Oil & Gas Property | Feb 2026 |
| 767 | ISENBERGER | Converse County, WY | Gas Property | Nov 2015 |
| 768 | ISENHOUR | Sublette County, WY | Oil & Gas Property | Mar 2026 |
| 769 | ISENHOWER | Callahan County, TX | Oil & Gas Property | Mar 2026 |
| 770 | ISENHOWER W. EST | Eastland County, TX | Oil & Gas Property | Mar 2026 |
| 771 | ISENSEE | Nueces County, TX | Oil & Gas Property | Mar 2026 |
| 772 | ISERN | Ness County, KS | Oil Property | Feb 2026 |
| 773 | ISERN | Barton County, KS | Oil & Gas Property | Feb 2026 |
| 774 | ISERNHAGEN | Cheyenne County, KS | Gas Property | Feb 2026 |
| 775 | ISG/DCE | Cuyahoga County, OH | Oil & Gas Property | Dec 2025 |
| 776 | ISHAM | Jim Wells County, TX | Oil & Gas Property | Mar 2026 |
| 777 | ISHAM | Texas County, OK | Gas Property | Feb 2026 |
| 778 | ISHIBASHI | Orange County, CA | Oil & Gas Property | Jul 1989 |
| 779 | ISHIGURO | Weld County, CO | Oil & Gas Property | Jul 2025 |
| 780 | ISHMAN | McKean County, PA | Oil & Gas Property | Dec 2025 |
| 781 | ISIDRO MORENO ET AL | Webb County, TX | Oil & Gas Property | Mar 2026 |
| 782 | ISLAND | Seminole County, OK | Oil & Gas Property | Mar 2026 |
| 783 | ISLAND BUTTE | Montezuma County, CO | Oil & Gas Property | Feb 2026 |
| 784 | ISLAND CREEK | Lincoln County, WV | Oil & Gas Property | Dec 2021 |
| 785 | ISLAND CREEK | Mingo County, WV | Gas Property | Dec 2021 |
| 786 | ISLAND CREEK CO | Hopkins County, KY | Oil & Gas Property | Jan 2024 |
| 787 | ISLAND CREEK CO | Logan County, WV | Oil & Gas Property | Dec 2021 |
| 788 | ISLAND CREEK COAL | Upshur County, WV | Oil & Gas Property | Dec 2021 |
| 789 | ISLAND CREEK COAL C | McDowell County, WV | Gas Property | Dec 2021 |
| 790 | ISLAND CREEK COAL CO | Hopkins County, KY | Oil & Gas Property | Dec 2014 |
| 791 | ISLAND LAKE 6092 12-24H | Burke County, ND | Oil & Gas Property | Apr 2026 |
| 792 | ISLAND PARK B | Garfield County, CO | Oil & Gas Property | Jan 2026 |
| 793 | ISLAND RANCH | Garfield County, CO | Oil & Gas Property | Feb 2026 |
| 794 | ISLAND U | Uintah County, UT | Oil & Gas Property | Dec 2015 |
| 795 | ISLAND U | Uintah County, UT | Oil & Gas Property | Mar 2026 |
| 796 | ISLAND UNIT | Uintah County, UT | Oil & Gas Property | Mar 2026 |
| 797 | ISLE | Montgomery County, KS | Gas Property | Feb 2026 |
| 798 | ISLE ROYAL 148-95-02A-11H-TF-LL | Dunn County, ND | Oil & Gas Property | Apr 2026 |
| 799 | ISLE ROYALE 20-5 | Dawson County, TX | Oil & Gas Property | Mar 2026 |
| 800 | ISLER FE | Chaves County, NM | Gas Property | Mar 2026 |