| 801 | OLE 2-1-29M | McKenzie County, ND | Oil & Gas Property | Apr 2026 |
| 802 | OLE 4-1-29MBH | McKenzie County, ND | Oil & Gas Property | Apr 2026 |
| 803 | OLE 5-1-29TFH | McKenzie County, ND | Oil & Gas Property | Apr 2026 |
| 804 | OLE 6-1-29MBH | McKenzie County, ND | Oil & Gas Property | Apr 2026 |
| 805 | OLE 7-1-29TFH | McKenzie County, ND | Oil & Gas Property | Apr 2026 |
| 806 | OLE 8-1-29 | McKenzie County, ND | Oil & Gas Property | Apr 2026 |
| 807 | OLE 9-1-29MBH | McKenzie County, ND | Oil & Gas Property | Apr 2026 |
| 808 | OLE GIESER UNIT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 809 | OLEA 24-11TFH | Dunn County, ND | Oil & Gas Property | Apr 2026 |
| 810 | OLEAN | Santa Barbara County, CA | Oil & Gas Property | Apr 1987 |
| 811 | OLEARY | Barton County, KS | Oil Property | Feb 2026 |
| 812 | OLEARY | Rooks County, KS | Oil Property | Feb 2026 |
| 813 | OLEBULLY 8-1-29TFH-ULW | McKenzie County, ND | Oil & Gas Property | Apr 2026 |
| 814 | OLEN SLEDGE | Grady County, OK | Oil & Gas Property | Jan 2026 |
| 815 | OLENHOUSE | Wilson County, KS | Gas Property | Feb 2026 |
| 816 | OLENHOUSE | Wilson County, KS | Gas Property | Feb 2026 |
| 817 | OLENICK | Wilson County, TX | Oil & Gas Property | Oct 2025 |
| 818 | OLER THOMPSON B | Clearfield County, PA | Gas Property | Dec 2024 |
| 819 | OLES | Erie County, NY | Gas Property | Dec 2024 |
| 820 | OLEUM CORP | Collier County, FL | Oil & Gas Property | Dec 2024 |
| 821 | OLEX US | Denton County, TX | Oil & Gas Property | Mar 2026 |
| 822 | OLEXA | Fayette County, PA | Oil & Gas Property | Mar 2026 |
| 823 | OLEY 1-28 | Ness County, KS | Oil Property | Feb 2026 |
| 824 | OLEY UNIT | Lee County, TX | Oil & Gas Property | Mar 2026 |
| 825 | OLFERT | Valley County, MT | Oil & Gas Property | Feb 2019 |
| 826 | OLGA | Kearny County, KS | Gas Property | Feb 2026 |
| 827 | OLGA 150-99-15-22-1H | McKenzie County, ND | Oil & Gas Property | Apr 2026 |
| 828 | OLGA COAL | McDowell County, WV | Oil & Gas Property | Dec 2021 |
| 829 | OLGA COAL CO. 1 | McDowell County, WV | Gas Property | Dec 2021 |
| 830 | OLGA COAL CO. 1 | McDowell County, WV | Gas Property | Dec 2021 |
| 831 | OLGA H WEBER | Jefferson County, PA | Gas Property | Dec 2025 |
| 832 | OLGA MARTENS | Major County, OK | Oil & Gas Property | Dec 2017 |
| 833 | OLGUIN | La Plata County, CO | Gas Property | Apr 2026 |
| 834 | OLIFANT UNIVERSITY 25 18 | Ward County, TX | Oil & Gas Property | Mar 2026 |
| 835 | OLIFANT UNIVERSITY 38 18 | Ward County, TX | Oil & Gas Property | Mar 2026 |
| 836 | OLIG CRUDE | Kern County, CA | Oil Property | Sep 2007 |
| 837 | OLIGER | Conway County, AR | Gas Property | Jul 2024 |
| 838 | OLIKTOK P | Beechey Point Quadrangle, AK | Oil & Gas Property | Oct 2011 |
| 839 | OLIN | Union County, AR | Oil Property | Jan 2023 |
| 840 | OLIN | Sabine Parish, LA | Oil & Gas Property | Oct 2024 |
| 841 | OLIN | Union County, AR | Oil & Gas Property | Mar 2026 |
| 842 | OLIN | Weld County, CO | Oil & Gas Property | May 2020 |
| 843 | OLIN | Weld County, CO | Oil & Gas Property | Jun 2019 |
| 844 | OLIN | Union Parish, LA | Gas Property | Nov 2024 |
| 845 | OLIN | Union County, AR | Oil & Gas Property | Apr 2026 |
| 846 | OLIN | Union Parish, LA | Gas Property | Dec 2010 |
| 847 | OLIN CORPORATION | Meade County, KY | Gas Property | Aug 2020 |
| 848 | OLIN FEE | Union County, AR | Oil Property | Mar 2026 |
| 849 | OLIN GAS TRANS | Union Parish, LA | Gas Property | Nov 2024 |
| 850 | OLIN GAS TRANSMISSION | Union Parish, LA | Gas Property | Dec 2024 |
| 851 | OLIN HA | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 852 | OLIN INDUSTRIES | Panola County, TX | Oil & Gas Property | Feb 2026 |
| 853 | OLIN INDUSTRIES | Union Parish, LA | Gas Property | Nov 2024 |
| 854 | OLIN MATH | Union Parish, LA | Gas Property | Dec 2024 |
| 855 | OLIN MATH | Union Parish, LA | Gas Property | Dec 2000 |
| 856 | OLIN MATH | Union Parish, LA | Gas Property | Dec 2024 |
| 857 | OLIN MATH | Union Parish, LA | Gas Property | Sep 2012 |
| 858 | OLIN STATE | Weld County, CO | Oil & Gas Property | Nov 2019 |
| 859 | OLIN-BROWN | Caldwell Parish, LA | Oil & Gas Property | Aug 2023 |
| 860 | OLIN-INTERNATIONAL PAPER COMPANY | Lafayette County, AR | Oil & Gas Property | Mar 2026 |
| 861 | OLIN-IPCO | Lafayette County, AR | Oil Property | Oct 1996 |
| 862 | OLINDA | Orange County, CA | Oil & Gas Property | Dec 2025 |
| 863 | OLINDA F | Orange County, CA | Oil & Gas Property | Dec 2025 |
| 864 | OLINGER | Coffey County, KS | Oil Property | Jan 2026 |
| 865 | OLINGER | Coshocton County, OH | Oil & Gas Property | Dec 2025 |
| 866 | OLINGER, RALPH | Adair County, KY | Oil Property | Sep 2013 |
| 867 | OLINICK | Karnes County, TX | Oil & Gas Property | Mar 2026 |
| 868 | OLINKRAFT | De Soto Parish, LA | Oil & Gas Property | Dec 2024 |
| 869 | OLINKRAFT | Union Parish, LA | Gas Property | Jan 2017 |
| 870 | OLINKRAFT | Ouachita Parish, LA | Oil & Gas Property | Jun 2019 |
| 871 | OLINKRAFT | Union Parish, LA | Gas Property | Nov 2024 |
| 872 | OLINKRAFT | Union Parish, LA | Gas Property | Jul 2024 |
| 873 | OLINKRAFT | Union Parish, LA | Gas Property | Dec 2000 |
| 874 | OLINKRAFT | Union Parish, LA | Gas Property | Nov 2024 |
| 875 | OLIPHANT | Hughes County, OK | Oil & Gas Property | Mar 2022 |
| 876 | OLIPHANT | Hodgeman County, KS | Oil Property | Jan 2025 |
| 877 | OLIPHANT | Montague County, TX | Oil & Gas Property | Mar 2026 |
| 878 | OLIVARES A | Starr County, TX | Oil & Gas Property | Mar 2026 |
| 879 | OLIVAREZ | Hidalgo County, TX | Oil & Gas Property | Mar 2026 |
| 880 | OLIVAREZ M.L. ETAL GAS UNIT | Hidalgo County, TX | Oil & Gas Property | Mar 2026 |
| 881 | OLIVE | Payne County, OK | Oil Property | Jun 2000 |
| 882 | OLIVE | Brazos County, TX | Oil & Gas Property | Feb 2026 |
| 883 | OLIVE BRANCH | Andrews County, TX | Oil & Gas Property | Mar 2026 |
| 884 | OLIVE COMMUNITY | Los Angeles County, CA | Oil & Gas Property | Feb 2026 |
| 885 | OLIVE JUNE | Blaine County, OK | Oil & Gas Property | Mar 2026 |
| 886 | OLIVE M MARBURGER LIVING TRUST | Butler County, PA | Oil & Gas Property | Mar 2026 |
| 887 | OLIVE M. SMITH | Sedgwick County, KS | Oil Property | Feb 2026 |
| 888 | OLIVE MAE 7-8-9H | Mountrail County, ND | Oil & Gas Property | Apr 2026 |
| 889 | OLIVE RUDD | Edwards County, KS | Oil & Gas Property | Nov 2013 |
| 890 | OLIVE USA 34-33TFH | Mountrail County, ND | Oil & Gas Property | Apr 2026 |
| 891 | OLIVE WATERFLOOD | Decatur County, KS | Oil Property | Feb 2026 |
| 892 | OLIVE WON UNIT | Eddy County, NM | Oil & Gas Property | Apr 2026 |
| 893 | OLIVE-ARLENE 27-3-HLID3 | Richland County, MT | Oil & Gas Property | Mar 2026 |
| 894 | OLIVE-LESUEUR 27-4H | Richland County, MT | Oil & Gas Property | Mar 2026 |
| 895 | OLIVEIRA | McMullen County, TX | Oil & Gas Property | Mar 2026 |
| 896 | OLIVER | Lee County, KY | Oil Property | Dec 2023 |
| 897 | OLIVER | Texas County, OK | Gas Property | Mar 2026 |
| 898 | OLIVER | Stephens County, OK | Oil Property | Apr 2026 |
| 899 | OLIVER | Orange County, CA | Oil & Gas Property | Jul 2004 |
| 900 | OLIVER | Haskell County, KS | Oil & Gas Property | Feb 2026 |