| 1001 | UPRR-AMOCO | Carbon County, WY | Oil & Gas Property | Dec 1985 |
| 1002 | UPRR-AMOCO 3 | Elbert County, CO | Oil & Gas Property | May 2006 |
| 1003 | UPRR-EHN | Adams County, CO | Oil Property | Aug 2021 |
| 1004 | UPRR-HABEL | Adams County, CO | Oil & Gas Property | May 2018 |
| 1005 | UPRR-HOLMQUIST | Adams County, CO | Oil & Gas Property | Feb 2026 |
| 1006 | UPRR-LINNEBUR | Adams County, CO | Oil & Gas Property | Nov 2020 |
| 1007 | UPRR-TALBOT | Albany County, WY | Oil Property | May 2026 |
| 1008 | UPSHAW | Stonewall County, TX | Oil & Gas Property | Apr 2026 |
| 1009 | UPSHUR PROPERTY INC | Upshur County, WV | Oil & Gas Property | Dec 2021 |
| 1010 | UPSLOPE FEDERAL COM | Eddy County, NM | Oil & Gas Property | Apr 2026 |
| 1011 | UPTEGROVE | San Juan County, NM | Gas Property | Apr 2026 |
| 1012 | UPTEGROVE GAS COM | San Juan County, NM | Oil & Gas Property | Apr 2026 |
| 1013 | UPTON | Upton County, TX | Oil & Gas Property | Apr 2026 |
| 1014 | UPTON | Allen County, KS | Oil Property | May 1997 |
| 1015 | UPTON | Upton County, TX | Oil & Gas Property | Apr 2026 |
| 1016 | UPTON | Upton County, TX | Oil & Gas Property | Apr 2026 |
| 1017 | UPTON | Upton County, TX | Oil & Gas Property | Feb 2022 |
| 1018 | UPTON UNIT | Hitchcock County, NE | Oil Property | Dec 2025 |
| 1019 | UPV 13 | Weld County, CO | Oil & Gas Property | Jun 2024 |
| 1020 | UPV 2 | Adams County, CO | Oil & Gas Property | Apr 2019 |
| 1021 | UPV 2 | Weld County, CO | Oil & Gas Property | Jul 2023 |
| 1022 | UPV 2 | Weld County, CO | Oil & Gas Property | Sep 2019 |
| 1023 | UPV 27 | Weld County, CO | Oil & Gas Property | Feb 2014 |
| 1024 | UPV 3 | Weld County, CO | Oil & Gas Property | Jun 2020 |
| 1025 | UPV 3 | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 1026 | UPV 3 | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 1027 | UPV 3 | Adams County, CO | Oil & Gas Property | Apr 2019 |
| 1028 | UPV 5 | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 1029 | UPV 7 | Adams County, CO | Oil & Gas Property | Dec 2018 |
| 1030 | URAL | Shelby County, TX | Oil & Gas Property | Apr 2026 |
| 1031 | URAN | Mountrail County, ND | Oil & Gas Property | May 2026 |
| 1032 | URAN | Mountrail County, ND | Oil & Gas Property | May 2026 |
| 1033 | URAN | Mountrail County, ND | Oil & Gas Property | May 2026 |
| 1034 | URAN 31-2H | Mountrail County, ND | Oil & Gas Property | May 2026 |
| 1035 | URAN FEDERAL 2 | Mountrail County, ND | Oil & Gas Property | May 2026 |
| 1036 | URANIA | Lasalle Parish, LA | Oil & Gas Property | May 2022 |
| 1037 | URANIA | Lasalle Parish, LA | Oil Property | Jan 2025 |
| 1038 | URANIA C-SHEMEN | Lasalle Parish, LA | Oil Property | Jan 2025 |
| 1039 | URANIA LUMBER | Lasalle Parish, LA | Oil & Gas Property | Jan 2025 |
| 1040 | URANINITE 32 33 STATE FEDERAL COM | Eddy County, NM | Oil & Gas Property | Apr 2026 |
| 1041 | URBAN | Liberty County, TX | Oil & Gas Property | Mar 2026 |
| 1042 | URBAN | Reno County, KS | Oil & Gas Property | Mar 2026 |
| 1043 | URBAN | Austin County, TX | Oil & Gas Property | Sep 1994 |
| 1044 | URBAN | Woods County, OK | Oil & Gas Property | Mar 2026 |
| 1045 | URBAN | Ellis County, KS | Oil Property | Feb 2026 |
| 1046 | URBAN | Rush County, KS | Oil & Gas Property | Mar 2026 |
| 1047 | URBAN | Bastrop County, TX | Oil & Gas Property | Nov 2022 |
| 1048 | URBAN | Ellis County, KS | Oil Property | Mar 2026 |
| 1049 | URBAN 2-36H | Billings County, ND | Oil & Gas Property | May 2026 |
| 1050 | URBAN 44-11 | Williams County, ND | Oil & Gas Property | May 2026 |
| 1051 | URBAN CS | Campbell County, WY | Gas Property | Feb 2019 |
| 1052 | URBAN HELBERG | Garfield County, OK | Oil & Gas Property | Apr 2020 |
| 1053 | URBAN JONES 122 | Ochiltree County, TX | Oil & Gas Property | Apr 2026 |
| 1054 | URBAN ROBERT H | Ochiltree County, TX | Oil & Gas Property | Apr 2026 |
| 1055 | URBAN-BIEDENBACH | Monroe County, OH | Oil & Gas Property | Mar 2026 |
| 1056 | URBAN-BRACEY OU #1 | Austin County, TX | Oil & Gas Property | Apr 2026 |
| 1057 | URBAN-CARPENTER | Monroe County, OH | Oil & Gas Property | Mar 2026 |
| 1058 | URBAN-MCDOUGAL | Monroe County, OH | Oil & Gas Property | Mar 2026 |
| 1059 | URBANCZYK | Atascosa County, TX | Oil & Gas Property | Apr 2026 |
| 1060 | URBANCZYK | Gray County, TX | Gas Property | Apr 2026 |
| 1061 | URBANCZYK | Gray County, TX | Oil & Gas Property | Aug 2025 |
| 1062 | URBANCZYK | Carson County, TX | Oil & Gas Property | Apr 2026 |
| 1063 | URBANCZYK -B | Carson County, TX | Gas Property | Apr 2026 |
| 1064 | URBANCZYK UNIT | Karnes County, TX | Oil & Gas Property | Apr 2026 |
| 1065 | URBANICK | Crawford County, PA | Oil & Gas Property | Dec 2025 |
| 1066 | URBANOSKY | Burleson County, TX | Oil & Gas Property | Mar 2026 |
| 1067 | URBANOVSKY UNIT | Burleson County, TX | Oil & Gas Property | Mar 2026 |
| 1068 | URBANSKY #1 | Cleveland County, OK | Oil & Gas Property | Apr 2026 |
| 1069 | URCHISON | Le Flore County, OK | Gas Property | Mar 2026 |
| 1070 | URHO 11-36H | Mountrail County, ND | Oil & Gas Property | May 2026 |
| 1071 | URIAH GEORGE 328 | Clarion County, PA | Gas Property | Dec 2024 |
| 1072 | URIAH OL | Grimes County, TX | Oil & Gas Property | Apr 2026 |
| 1073 | URIBE | Zapata County, TX | Oil & Gas Property | Apr 2026 |
| 1074 | URIBE | Zapata County, TX | Oil & Gas Property | Apr 2026 |
| 1075 | URIBE | Zapata County, TX | Oil & Gas Property | Apr 2026 |
| 1076 | URIBE AURELIANO HEIRS | Zapata County, TX | Oil & Gas Property | Apr 2026 |
| 1077 | URIBE FAMILY TRUST | Zapata County, TX | Oil & Gas Property | Apr 2026 |
| 1078 | URIBE ROGELIO A A | Zapata County, TX | Oil & Gas Property | Aug 2018 |
| 1079 | URIBE SERAFIN | Zapata County, TX | Oil & Gas Property | Apr 2026 |
| 1080 | URIBE, ROSITA | Webb County, TX | Oil & Gas Property | Apr 2026 |
| 1081 | URIBE-M DEMARTINEZ GAS UNIT 1 | Zapata County, TX | Gas Property | Apr 2026 |
| 1082 | URICE | Cotton County, OK | Oil & Gas Property | Apr 2026 |
| 1083 | URIE GAS UNIT | Kearny County, KS | Gas Property | Mar 2026 |
| 1084 | URQUHART | Pittsburg County, OK | Gas Property | Mar 2026 |
| 1085 | URQUHART | McIntosh County, OK | Gas Property | Mar 2026 |
| 1086 | URQUIDEZ | Eddy County, NM | Oil & Gas Property | Aug 2023 |
| 1087 | URRACA 11 AV FEDERAL COM | Lea County, NM | Oil & Gas Property | May 2026 |
| 1088 | URRACA 11 SB FEDERAL | Lea County, NM | Oil & Gas Property | May 2026 |
| 1089 | URRACA FEDERAL | Lea County, NM | Oil & Gas Property | Apr 2026 |
| 1090 | URRUTIA UNIT | Karnes County, TX | Oil & Gas Property | Apr 2026 |
| 1091 | URSA 27 B2EH FEDERAL COM | Eddy County, NM | Oil & Gas Property | Apr 2026 |
| 1092 | URSA 27 FEDERAL COM | Eddy County, NM | Oil & Gas Property | Apr 2026 |
| 1093 | URSA MAJOR | Butler County, PA | Gas Property | Apr 2026 |
| 1094 | URSA MAJOR 8 FEDERAL | Lea County, NM | Oil & Gas Property | May 2026 |
| 1095 | URSA MINOR | Butler County, PA | Gas Property | Apr 2026 |
| 1096 | URSCHEL | Hemphill County, TX | Oil & Gas Property | Apr 2026 |
| 1097 | URSCHEL | Creek County, OK | Oil Property | Jan 2020 |
| 1098 | URSCHEL C.F | Starr County, TX | Oil & Gas Property | Jul 2019 |
| 1099 | URSCHEL-STUDER 2/1 A C001DM | Hemphill County, TX | Oil & Gas Property | Apr 2026 |
| 1100 | URSO | Brazos County, TX | Oil & Gas Property | Apr 2026 |