| 801 | UNIVERSITY TB(SHALLOW) UNIT A-1 | Andrews County, TX | Oil & Gas Property | Jan 2025 |
| 802 | UNIVERSITY WADDELL DEVONIAN UNIT | Crane County, TX | Oil & Gas Property | Jan 2025 |
| 803 | UNIVERSITY WEST | Tarrant County, TX | Gas Property | Jan 2025 |
| 804 | UNIVERSITY/ENERGEN GRAYBURG UNIT | Andrews County, TX | Oil & Gas Property | Jan 2025 |
| 805 | UNIVERSITYVINCENT | Upton County, TX | Oil & Gas Property | Jan 2025 |
| 806 | UNIVJENNY | Crane County, TX | Oil & Gas Property | Jan 2025 |
| 807 | UNIVKEISHA | Crockett County, TX | Oil & Gas Property | Jan 2025 |
| 808 | UNIVKENNEDY | Crane County, TX | Oil & Gas Property | Jan 2025 |
| 809 | UNIVKIMRA | Crane County, TX | Oil & Gas Property | Jan 2025 |
| 810 | UNIVKRISTIN | Crane County, TX | Oil & Gas Property | Dec 2024 |
| 811 | UNIVLINDSAY | Crane County, TX | Oil & Gas Property | Dec 2024 |
| 812 | UNIVMICHELLE | Crane County, TX | Oil & Gas Property | Jan 2025 |
| 813 | UNIVMISTY | Upton County, TX | Oil & Gas Property | Jan 2025 |
| 814 | UNIVNATALIE | Andrews County, TX | Oil & Gas Property | Jan 2025 |
| 815 | UNIVNICHOLE | Crockett County, TX | Oil & Gas Property | Jan 2025 |
| 816 | UNIVPAYTON | Crane County, TX | Oil & Gas Property | Jan 2025 |
| 817 | UNIVSAMANTHA | Crane County, TX | Oil & Gas Property | Jan 2025 |
| 818 | UNIVSHANNON | Crane County, TX | Oil Property | Feb 2025 |
| 819 | UNIVSHERRY | Crane County, TX | Oil & Gas Property | Dec 2024 |
| 820 | UNIVTARA | Reagan County, TX | Oil & Gas Property | Jan 2025 |
| 821 | UNIVTAYLOR | Crane County, TX | Oil & Gas Property | Dec 2024 |
| 822 | UNIVWANDA | Andrews County, TX | Oil & Gas Property | Dec 2023 |
| 823 | UNKEL FEE | Crook County, WY | Oil Property | Jul 2011 |
| 824 | UNKEL TRACT | Crook County, WY | Oil & Gas Property | Jun 2018 |
| 825 | UNKNOWN | Washington County, OH | Oil & Gas Property | Dec 2024 |
| 826 | UNKNOWN | Floyd County, KY | Oil & Gas Property | Dec 2023 |
| 827 | UNKNOWN | Washington County, OH | Gas Property | Dec 2024 |
| 828 | UNKNOWN | Sandusky County, OH | Oil Property | Dec 2024 |
| 829 | UNKNOWN | Owsley County, KY | Oil Property | Dec 2021 |
| 830 | UNKNOWN | Lee County, KY | Oil Property | Dec 2020 |
| 831 | UNKNOWN | Lawrence County, KY | Oil & Gas Property | Dec 2023 |
| 832 | UNKNOWN | Boyd County, KY | Gas Property | Dec 2023 |
| 833 | UNMESSIG | Leavenworth County, KS | Oil & Gas Property | Feb 1989 |
| 834 | UNNAMED | Los Angeles County, CA | Oil & Gas Property | Dec 2024 |
| 835 | UNNAMED | Los Angeles County, CA | Oil Property | Sep 1999 |
| 836 | UNNAMED | Orange County, CA | Oil & Gas Property | Dec 2024 |
| 837 | UNNI 21X-27B | Williams County, ND | Oil & Gas Property | Feb 2025 |
| 838 | UNO NUMERO | Dawson County, TX | Oil & Gas Property | Jan 2025 |
| 839 | UNO STATE | Lea County, NM | Oil & Gas Property | Feb 2025 |
| 840 | UNOCAL | Eddy County, NM | Oil Property | Apr 1998 |
| 841 | UNOCAL | Garfield County, CO | Oil & Gas Property | Feb 2025 |
| 842 | UNOCAL 940 | Garza County, TX | Oil & Gas Property | Jan 2025 |
| 843 | UNOCAL AH U FEDERAL | Eddy County, NM | Oil & Gas Property | Feb 2024 |
| 844 | UNOCAL-ENCANA | Garfield County, CO | Oil & Gas Property | Feb 2025 |
| 845 | UNOCAL-HPC FEDERAL | Eddy County, NM | Oil & Gas Property | Feb 2025 |
| 846 | UNPSECIFIED | Fresno County, CA | Oil & Gas Property | Mar 2021 |
| 847 | UNREIN | Kearny County, KS | Gas Property | Dec 2024 |
| 848 | UNREIN | Kearny County, KS | Gas Property | Dec 2024 |
| 849 | UNREIN | Kearny County, KS | Gas Property | Dec 2024 |
| 850 | UNRUH | Kiowa County, KS | Oil & Gas Property | Dec 2024 |
| 851 | UNRUH | Caddo County, OK | Oil & Gas Property | Feb 2025 |
| 852 | UNRUH | Upton County, TX | Oil & Gas Property | Jan 2025 |
| 853 | UNRUH | Ochiltree County, TX | Oil & Gas Property | Jan 2025 |
| 854 | UNRUH | Seward County, KS | Oil & Gas Property | Dec 2024 |
| 855 | UNRUH | Marion County, KS | Oil & Gas Property | Jun 1997 |
| 856 | UNRUH | McPherson County, KS | Oil & Gas Property | Dec 2024 |
| 857 | UNRUH | Comanche County, KS | Oil & Gas Property | Dec 2024 |
| 858 | UNRUH | Marion County, KS | Oil Property | Jul 2024 |
| 859 | UNRUH | Pawnee County, KS | Oil & Gas Property | Nov 2018 |
| 860 | UNRUH | Haskell County, KS | Oil & Gas Property | Dec 2024 |
| 861 | UNRUH | Harper County, KS | Oil & Gas Property | Jan 2023 |
| 862 | UNRUH | McPherson County, KS | Oil Property | Dec 2024 |
| 863 | UNRUH | Kiowa County, KS | Oil & Gas Property | Apr 2016 |
| 864 | UNRUH | Barton County, KS | Oil & Gas Property | Apr 2004 |
| 865 | UNRUH | Kearny County, KS | Oil & Gas Property | Dec 2024 |
| 866 | UNRUH | Stafford County, KS | Oil Property | Aug 2024 |
| 867 | UNRUH 'H' | Kiowa County, KS | Oil & Gas Property | Oct 2023 |
| 868 | UNSICKER | Pecos County, TX | Oil & Gas Property | Jan 2025 |
| 869 | UNSPECIFIED | Fresno County, CA | Oil Property | May 1991 |
| 870 | UNSPECIFIED | Kern County, CA | Oil Property | Jun 2007 |
| 871 | UNSPECIFIED | Fresno County, CA | Oil & Gas Property | Dec 2024 |
| 872 | UNSPECIFIED | Fresno County, CA | Oil & Gas Property | Dec 2024 |
| 873 | UNSPECIFIED | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 874 | UNSPECIFIED | Kings County, CA | Oil & Gas Property | Dec 2024 |
| 875 | UNSPECIFIED | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 876 | UNSPECIFIED | Fresno County, CA | Oil & Gas Property | Jun 2021 |
| 877 | UNSPECIFIED | Ventura County, CA | Oil Property | Nov 1993 |
| 878 | UNSPECIFIED | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 879 | UNSPECIFIED | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 880 | UNSPECIFIED | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 881 | UNSPECIFIED | Kings County, CA | Oil & Gas Property | Dec 2024 |
| 882 | UNSPECIFIED | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 883 | UNSPECIFIED | Ventura County, CA | Oil & Gas Property | May 1996 |
| 884 | UNSPECIFIED | San Benito County, CA | Oil & Gas Property | Jan 1989 |
| 885 | UNSPECIFIED | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 886 | UNSPECIFIED | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 887 | UNSPECIFIED | Los Angeles County, CA | Oil Property | Dec 2002 |
| 888 | UNSPECIFIED 2 | Kern County, CA | Oil Property | Dec 2024 |
| 889 | UNSPECIFIED 3 | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 890 | UNSPECIFIED 34 | Kern County, CA | Oil & Gas Property | Jul 2017 |
| 891 | UNSPECIFIED BEX-R4 | Kern County, CA | Oil Property | Dec 2024 |
| 892 | UNSPECIFIED WR | Kern County, CA | Oil & Gas Property | Dec 2024 |
| 893 | UNTCH UNIT | Mahoning County, OH | Oil & Gas Property | Dec 2024 |
| 894 | UNUSSEE | Okfuskee County, OK | Oil & Gas Property | Jan 2025 |
| 895 | UNWIN | Major County, OK | Oil & Gas Property | Nov 2021 |
| 896 | UP AND L | Emery County, UT | Gas Property | Feb 2025 |
| 897 | UPCHURCH | Clinton County, KY | Oil Property | Nov 2015 |
| 898 | UPCHURCH | Grimes County, TX | Oil & Gas Property | Jan 2025 |
| 899 | UPCHURCH | Lavaca County, TX | Oil & Gas Property | Dec 2024 |
| 900 | UPCHURCH STATE LD02-7 | Weld County, CO | Oil & Gas Property | Feb 2025 |