| 131101 | UPRR 3 | Weld County, CO | Oil & Gas Property | Jun 2021 |
| 131102 | UPRR 38 PAN AM | Weld County, CO | Oil & Gas Property | Mar 2020 |
| 131103 | UPRR 38 PAN AM | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 131104 | UPRR 4 | Weld County, CO | Oil & Gas Property | May 2025 |
| 131105 | UPRR 42 PAN AM | Weld County, CO | Oil & Gas Property | May 2025 |
| 131106 | UPRR 42 PAN AM | Weld County, CO | Oil & Gas Property | May 2025 |
| 131107 | UPRR 42 PAN AM | Weld County, CO | Oil & Gas Property | Sep 2019 |
| 131108 | UPRR 42 PAN AM | Weld County, CO | Oil & Gas Property | May 2025 |
| 131109 | UPRR 48 PAN AM | Adams County, CO | Oil & Gas Property | Oct 2024 |
| 131110 | UPRR 50 PAN | Weld County, CO | Oil & Gas Property | May 2025 |
| 131111 | UPRR 53 PAN AM | Weld County, CO | Oil & Gas Property | Mar 2020 |
| 131112 | UPRR 60 PAN AM | Adams County, CO | Oil & Gas Property | Sep 2021 |
| 131113 | UPRR 62 PAN AM | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 131114 | UPRR BERGREN | Weld County, CO | Oil & Gas Property | Jan 2017 |
| 131115 | UPRR FOREST ARCH | Sweetwater County, WY | Oil & Gas Property | Jul 2024 |
| 131116 | UPRR SIDEBOTTOM | Cheyenne County, CO | Gas Property | Oct 2000 |
| 131117 | UPRR-AMOCO | Carbon County, WY | Oil & Gas Property | Dec 1985 |
| 131118 | UPRR-AMOCO 3 | Elbert County, CO | Oil & Gas Property | May 2006 |
| 131119 | UPRR-EHN | Adams County, CO | Oil Property | Aug 2021 |
| 131120 | UPRR-HABEL | Adams County, CO | Oil & Gas Property | May 2018 |
| 131121 | UPRR-HOLMQUIST | Adams County, CO | Oil & Gas Property | May 2025 |
| 131122 | UPRR-LINNEBUR | Adams County, CO | Oil & Gas Property | Nov 2020 |
| 131123 | UPRR-TALBOT | Albany County, WY | Oil Property | Jun 2025 |
| 131124 | UPSHAW | Stonewall County, TX | Oil & Gas Property | May 2025 |
| 131125 | UPSHUR PROPERTY INC | Upshur County, WV | Oil & Gas Property | Dec 2021 |
| 131126 | UPTEGROVE | San Juan County, NM | Gas Property | May 2025 |
| 131127 | UPTEGROVE GAS COM | San Juan County, NM | Oil & Gas Property | May 2025 |
| 131128 | UPTON | Upton County, TX | Oil & Gas Property | May 2025 |
| 131129 | UPTON | Allen County, KS | Oil Property | May 1997 |
| 131130 | UPTON | Upton County, TX | Oil & Gas Property | May 2025 |
| 131131 | UPTON | Upton County, TX | Oil & Gas Property | May 2025 |
| 131132 | UPTON | Upton County, TX | Oil & Gas Property | Feb 2022 |
| 131133 | UPTON UNIT | Hitchcock County, NE | Oil Property | Dec 2024 |
| 131134 | UPV 13 | Weld County, CO | Oil & Gas Property | Jun 2024 |
| 131135 | UPV 2 | Adams County, CO | Oil & Gas Property | Apr 2019 |
| 131136 | UPV 2 | Weld County, CO | Oil & Gas Property | Jul 2023 |
| 131137 | UPV 2 | Weld County, CO | Oil & Gas Property | Sep 2019 |
| 131138 | UPV 27 | Weld County, CO | Oil & Gas Property | Feb 2014 |
| 131139 | UPV 3 | Weld County, CO | Oil & Gas Property | Jun 2020 |
| 131140 | UPV 3 | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 131141 | UPV 3 | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 131142 | UPV 3 | Adams County, CO | Oil & Gas Property | Apr 2019 |
| 131143 | UPV 5 | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 131144 | UPV 7 | Adams County, CO | Oil & Gas Property | Dec 2018 |
| 131145 | URAL | Shelby County, TX | Oil & Gas Property | May 2025 |
| 131146 | URAN | Mountrail County, ND | Oil & Gas Property | May 2025 |
| 131147 | URAN | Mountrail County, ND | Oil & Gas Property | May 2025 |
| 131148 | URAN | Mountrail County, ND | Oil & Gas Property | May 2025 |
| 131149 | URAN 31-2H | Mountrail County, ND | Oil & Gas Property | May 2025 |
| 131150 | URAN FEDERAL 2 | Mountrail County, ND | Oil & Gas Property | May 2025 |
| 131151 | URANIA | Lasalle Parish, LA | Oil & Gas Property | May 2022 |
| 131152 | URANIA | Lasalle Parish, LA | Oil Property | Jan 2025 |
| 131153 | URANIA C-SHEMEN | Lasalle Parish, LA | Oil Property | Jan 2025 |
| 131154 | URANIA LUMBER | Lasalle Parish, LA | Oil & Gas Property | Jan 2025 |
| 131155 | URANINITE 32 33 STATE FEDERAL COM | Eddy County, NM | Oil & Gas Property | May 2025 |
| 131156 | URBAN | Liberty County, TX | Oil & Gas Property | May 2025 |
| 131157 | URBAN | Reno County, KS | Oil & Gas Property | Apr 2025 |
| 131158 | URBAN | Austin County, TX | Oil & Gas Property | Sep 1994 |
| 131159 | URBAN | Woods County, OK | Oil & Gas Property | Apr 2025 |
| 131160 | URBAN | Ellis County, KS | Oil Property | Oct 2024 |
| 131161 | URBAN | Rush County, KS | Oil & Gas Property | Apr 2025 |
| 131162 | URBAN | Bastrop County, TX | Oil & Gas Property | Mar 2025 |
| 131163 | URBAN | Ellis County, KS | Oil Property | Dec 2024 |
| 131164 | URBAN 2-36H | Billings County, ND | Oil & Gas Property | May 2025 |
| 131165 | URBAN 44-11 | Williams County, ND | Oil & Gas Property | May 2025 |
| 131166 | URBAN 7 | Graham County, KS | Oil Property | Apr 2025 |
| 131167 | URBAN CS | Campbell County, WY | Gas Property | Feb 2019 |
| 131168 | URBAN HELBERG | Garfield County, OK | Oil & Gas Property | Apr 2020 |
| 131169 | URBAN JONES 122 | Ochiltree County, TX | Oil & Gas Property | May 2025 |
| 131170 | URBAN ROBERT H | Ochiltree County, TX | Oil & Gas Property | May 2025 |
| 131171 | URBAN-BRACEY OU #1 | Austin County, TX | Oil & Gas Property | May 2025 |
| 131172 | URBANCZYK | Gray County, TX | Gas Property | May 2025 |
| 131173 | URBANCZYK | Gray County, TX | Oil & Gas Property | May 2025 |
| 131174 | URBANCZYK | Carson County, TX | Oil & Gas Property | May 2025 |
| 131175 | URBANCZYK -B | Carson County, TX | Gas Property | May 2025 |
| 131176 | URBANCZYK UNIT | Karnes County, TX | Oil & Gas Property | May 2025 |
| 131177 | URBANEK | Ellsworth County, KS | Oil Property | Mar 2025 |
| 131178 | URBANICK | Crawford County, PA | Oil & Gas Property | Dec 2024 |
| 131179 | URBANOSKY | Burleson County, TX | Oil & Gas Property | May 2025 |
| 131180 | URBANOVSKY UNIT | Burleson County, TX | Oil & Gas Property | May 2025 |
| 131181 | URBANSKY #1 | Cleveland County, OK | Oil & Gas Property | May 2025 |
| 131182 | URCHISON | Le Flore County, OK | Gas Property | Apr 2025 |
| 131183 | URIAH GEORGE 328 | Clarion County, PA | Gas Property | Dec 2024 |
| 131184 | URIAH OL | Grimes County, TX | Oil & Gas Property | May 2025 |
| 131185 | URIBE | Zapata County, TX | Oil & Gas Property | May 2025 |
| 131186 | URIBE | Zapata County, TX | Oil & Gas Property | May 2025 |
| 131187 | URIBE | Zapata County, TX | Oil & Gas Property | May 2025 |
| 131188 | URIBE FAMILY TRUST | Zapata County, TX | Oil & Gas Property | May 2025 |
| 131189 | URIBE SERAFIN | Zapata County, TX | Oil & Gas Property | May 2025 |
| 131190 | URIBE, ROSITA | Webb County, TX | Oil & Gas Property | May 2025 |
| 131191 | URIBE-M DEMARTINEZ GAS UNIT 1 | Zapata County, TX | Gas Property | May 2025 |
| 131192 | URICE | Cotton County, OK | Oil & Gas Property | Mar 2025 |
| 131193 | URIE GAS UNIT | Kearny County, KS | Gas Property | Apr 2025 |
| 131194 | URQUHART | Pittsburg County, OK | Gas Property | Apr 2025 |
| 131195 | URQUHART | McIntosh County, OK | Gas Property | Apr 2025 |
| 131196 | URQUIDEZ | Eddy County, NM | Oil & Gas Property | Aug 2023 |
| 131197 | URRACA 11 AV FEDERAL COM | Lea County, NM | Oil & Gas Property | May 2025 |
| 131198 | URRACA 11 SB FEDERAL | Lea County, NM | Oil & Gas Property | May 2025 |
| 131199 | URRACA FEDERAL | Lea County, NM | Oil & Gas Property | May 2025 |
| 131200 | URRUTIA UNIT | Karnes County, TX | Oil & Gas Property | May 2025 |