| 1801 | MARKLEY | Wayne County, OH | Gas Property | Dec 2025 |
| 1802 | MARKLEY | Tuscarawas County, OH | Oil & Gas Property | Dec 2025 |
| 1803 | MARKLEY ELIZABETH | Tuscarawas County, OH | Oil & Gas Property | Dec 2022 |
| 1804 | MARKLEY FANNIE | Lipscomb County, TX | Oil & Gas Property | May 2026 |
| 1805 | MARKOVICH,JOHN FOUR STATES UNIT A | Marion County, WV | Gas Property | Dec 2021 |
| 1806 | MARKOVITCH | Susquehanna County, PA | Gas Property | May 2026 |
| 1807 | MARKS | Blaine County, OK | Oil & Gas Property | Apr 2026 |
| 1808 | MARKS | Jack County, TX | Oil & Gas Property | May 2026 |
| 1809 | MARKS | Stark County, OH | Oil & Gas Property | Dec 2025 |
| 1810 | MARKS | Goliad County, TX | Oil & Gas Property | Oct 2017 |
| 1811 | MARKS | Blaine County, OK | Oil & Gas Property | Apr 2026 |
| 1812 | MARKS 'A' | Morton County, KS | Gas Property | Mar 2026 |
| 1813 | MARKS, C | Roane County, WV | Oil & Gas Property | Dec 2021 |
| 1814 | MARKS, J | Lewis County, WV | Oil & Gas Property | Dec 2021 |
| 1815 | MARKS, JAMES J | Lewis County, WV | Gas Property | Dec 2021 |
| 1816 | MARKS, JERRY M | Gilmer County, WV | Oil & Gas Property | Dec 2021 |
| 1817 | MARKS, ORMEDA | Gilmer County, WV | Oil & Gas Property | Dec 2021 |
| 1818 | MARKS, P | Wirt County, WV | Oil & Gas Property | Dec 2021 |
| 1819 | MARKS-POOVEY GAS UNIT 1 | Rusk County, TX | Oil & Gas Property | May 2026 |
| 1820 | MARKULIC, F | Allegan County, MI | Oil Property | May 2026 |
| 1821 | MARKUS | Kingfisher County, OK | Oil & Gas Property | Mar 2023 |
| 1822 | MARKWELL | Caddo County, OK | Oil Property | Sep 2008 |
| 1823 | MARKWITH, DENNIS | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 1824 | MARLA | Richland County, MT | Oil & Gas Property | May 2026 |
| 1825 | MARLA 10 | Atascosa County, TX | Oil & Gas Property | May 2026 |
| 1826 | MARLAN DOWNEY | Lea County, NM | Oil & Gas Property | May 2026 |
| 1827 | MARLAND 41-14TFH | Mountrail County, ND | Oil & Gas Property | May 2026 |
| 1828 | MARLATT | Adams County, CO | Oil & Gas Property | Jun 2020 |
| 1829 | MARLATT | Major County, OK | Oil & Gas Property | Mar 2025 |
| 1830 | MARLATT | Coshocton County, OH | Oil & Gas Property | Dec 2007 |
| 1831 | MARLATT | Hardin County, TX | Oil Property | May 2026 |
| 1832 | MARLENE | Finney County, KS | Oil Property | Apr 2026 |
| 1833 | MARLENE | Williams County, ND | Oil & Gas Property | May 2026 |
| 1834 | MARLENE | Lane County, KS | Oil Property | Apr 2026 |
| 1835 | MARLENE 1-10H | Williams County, ND | Oil & Gas Property | May 2026 |
| 1836 | MARLENE 34-11TFH | Dunn County, ND | Oil & Gas Property | May 2026 |
| 1837 | MARLENE 42X-20 | McKenzie County, ND | Oil & Gas Property | May 2026 |
| 1838 | MARLENE 5501 14-1T | Williams County, ND | Oil & Gas Property | May 2026 |
| 1839 | MARLENE LILI | Washington County, TX | Oil & Gas Property | May 2026 |
| 1840 | MARLENE OLSON | Live Oak County, TX | Oil & Gas Property | May 2026 |
| 1841 | MARLER | Wilson County, KS | Gas Property | Mar 2025 |
| 1842 | MARLETT T. W | Wise County, TX | Oil & Gas Property | May 2026 |
| 1843 | MARLEY | Crockett County, TX | Oil & Gas Property | Jan 2026 |
| 1844 | MARLEY | Jack County, TX | Oil & Gas Property | May 2026 |
| 1845 | MARLEY | Jack County, TX | Oil & Gas Property | Apr 2026 |
| 1846 | MARLEY C01 | Weld County, CO | Oil & Gas Property | Jun 2020 |
| 1847 | MARLEY STATE COM 31 | Eddy County, NM | Oil & Gas Property | May 2026 |
| 1848 | MARLEY-FRANSSEN | Jack County, TX | Oil & Gas Property | May 2026 |
| 1849 | MARLIN | Dunn County, ND | Oil & Gas Property | May 2026 |
| 1850 | MARLIN | Grimes County, TX | Oil & Gas Property | Sep 2025 |
| 1851 | MARLIN | Brazos County, TX | Oil & Gas Property | May 2026 |
| 1852 | MARLIN | La Salle County, TX | Oil & Gas Property | May 2026 |
| 1853 | MARLIN 11S | Reeves County, TX | Oil & Gas Property | May 2026 |
| 1854 | MARLIN 27-34 1H | Williams County, ND | Oil & Gas Property | May 2026 |
| 1855 | MARLIN 32 | Glasscock County, TX | Oil & Gas Property | May 2026 |
| 1856 | MARLIN 47 | Glasscock County, TX | Oil & Gas Property | May 2026 |
| 1857 | MARLIN B STEPHENS | Indiana County, PA | Gas Property | Dec 2025 |
| 1858 | MARLIN FUNKA | Washington County, PA | Oil & Gas Property | May 2026 |
| 1859 | MARLIN STATE | Eddy County, NM | Oil & Gas Property | Mar 2026 |
| 1860 | MARLISUE QUEEN UNIT | Chaves County, NM | Oil Property | Feb 2007 |
| 1861 | MARLOW | Perry County, OH | Oil & Gas Property | Dec 2018 |
| 1862 | MARLOW BURNS | Los Angeles County, CA | Oil & Gas Property | Jun 2026 |
| 1863 | MARLOW BURNS-BRADNA-LAI-COMM 1 1 | Los Angeles County, CA | Oil & Gas Property | Jun 2026 |
| 1864 | MARLOW MARY | Perry County, OH | Oil Property | Dec 2001 |
| 1865 | MARLYS OLSON 31-1H | Williams County, ND | Oil & Gas Property | May 2026 |
| 1866 | MARMACONDA STATE 2-5-14-17 | Reeves County, TX | Oil & Gas Property | May 2026 |
| 1867 | MARMALARD | Reeves County, TX | Oil & Gas Property | May 2026 |
| 1868 | MARMET | Ellis County, TX | Gas Property | May 2026 |
| 1869 | MARMET | Kanawha County, WV | Gas Property | Dec 2020 |
| 1870 | MARMET COAL | Kanawha County, WV | Gas Property | Dec 2021 |
| 1871 | MARMIE | Barton County, KS | Oil Property | Apr 2026 |
| 1872 | MARMION-THORNHILL HC | Dimmit County, TX | Oil & Gas Property | May 2026 |
| 1873 | MARMO UNIT | Lee County, TX | Oil & Gas Property | May 2026 |
| 1874 | MARMON | Mountrail County, ND | Oil & Gas Property | May 2026 |
| 1875 | MARMON HAHN | Williams County, ND | Oil & Gas Property | May 2026 |
| 1876 | MARMONT | Toole County, MT | Gas Property | Mar 2026 |
| 1877 | MARMOT 19_18-16N-10W | Blaine County, OK | Oil & Gas Property | Apr 2026 |
| 1878 | MARMOT 55-14 UNIT | Reeves County, TX | Oil & Gas Property | May 2026 |
| 1879 | MARNA | Campbell County, WY | Oil & Gas Property | Jun 2026 |
| 1880 | MARNA KUEHNE | Campbell County, WY | Oil Property | Mar 1994 |
| 1881 | MARNER | Stanton County, KS | Gas Property | Apr 2026 |
| 1882 | MARNI | Moore County, TX | Oil & Gas Property | May 2026 |
| 1883 | MARNITA FIU 1-3-34XHM | Blaine County, OK | Oil & Gas Property | Apr 2026 |
| 1884 | MAROLYN | Crockett County, TX | Oil & Gas Property | May 2026 |
| 1885 | MARON UNIT A | Dewitt County, TX | Oil & Gas Property | May 2026 |
| 1886 | MARON-RESP-VASB ULW | Dewitt County, TX | Oil & Gas Property | May 2026 |
| 1887 | MARON-VASB USW B | Dewitt County, TX | Oil & Gas Property | May 2026 |
| 1888 | MARONE | Washington County, OK | Oil & Gas Property | Aug 2019 |
| 1889 | MARONEY | Harper County, KS | Oil & Gas Property | Apr 2026 |
| 1890 | MARONEY | Sabine Parish, LA | Oil & Gas Property | Dec 2024 |
| 1891 | MAROON 18 | Yuma County, CO | Gas Property | May 2026 |
| 1892 | MAROON BELLS 13-14 UNIT | Reeves County, TX | Oil & Gas Property | May 2026 |
| 1893 | MAROON BELLS FEDERAL COM 16 32 36 SB | Lea County, NM | Oil & Gas Property | May 2026 |
| 1894 | MAROONER | Winkler County, TX | Oil & Gas Property | Apr 2026 |
| 1895 | MAROONS | Garvin County, OK | Oil & Gas Property | Apr 2026 |
| 1896 | MAROSCHER UNIT | Columbiana County, OH | Gas Property | Dec 2025 |
| 1897 | MARPAT | Bexar County, TX | Oil Property | May 2026 |
| 1898 | MARPLE | Wilson County, KS | Oil Property | Apr 2026 |
| 1899 | MARPLE | Harrison County, WV | Gas Property | Dec 2021 |
| 1900 | MARPLE | Upshur County, WV | Oil & Gas Property | Dec 2021 |