| 1901 | ALLDREDGE | Fisher County, TX | Oil & Gas Property | Dec 2019 |
| 1902 | ALLEDER | Midland County, TX | Oil & Gas Property | Nov 2025 |
| 1903 | ALLEE | Dimmit County, TX | Oil & Gas Property | Nov 2025 |
| 1904 | ALLEE | Roger Mills County, OK | Oil & Gas Property | Oct 2025 |
| 1905 | ALLEE UNIT | Dimmit County, TX | Oil & Gas Property | Nov 2025 |
| 1906 | ALLEGANY | Potter County, PA | Gas Property | Nov 2025 |
| 1907 | ALLEGHENY ENERGY | Allegheny County, PA | Gas Property | Dec 2024 |
| 1908 | ALLEGHENY LAND CO | Boone County, WV | Oil & Gas Property | Dec 2021 |
| 1909 | ALLEGHENY LAND CO | Boone County, WV | Gas Property | Dec 2021 |
| 1910 | ALLEGHENY LUDLUM STEEL CORP | Westmoreland County, PA | Gas Property | Dec 2024 |
| 1911 | ALLEGHENY METALS | Armstrong County, PA | Gas Property | Dec 2024 |
| 1912 | ALLEGHENY MINERAL | Armstrong County, PA | Gas Property | Dec 2024 |
| 1913 | ALLEGHENY MINERAL CORP | Armstrong County, PA | Gas Property | Dec 2024 |
| 1914 | ALLEGHENY N | Elk County, PA | Oil & Gas Property | Dec 2024 |
| 1915 | ALLEGHENY N | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 1916 | ALLEGHENY NAT | Elk County, PA | Oil & Gas Property | Dec 2024 |
| 1917 | ALLEGHENY NAT | Elk County, PA | Oil & Gas Property | Dec 2024 |
| 1918 | ALLEGHENY NATIONAL FOREST | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 1919 | ALLEGHENY NATL FOREST | Elk County, PA | Gas Property | Dec 2024 |
| 1920 | ALLEGHENY NATL FOREST 1 | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 1921 | ALLEGHENY NATL FOREST LOT 7 | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 1922 | ALLEGHENY NATL FOREST WARRANT 5195 95 | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 1923 | ALLEGHENY RIDGE WEST HILLEGAS | Lycoming County, PA | Gas Property | Nov 2025 |
| 1924 | ALLEGHENY RIVER MIN | Jefferson County, PA | Oil & Gas Property | Dec 2024 |
| 1925 | ALLEGHENY RIVER MINI | Jefferson County, PA | Gas Property | Dec 2024 |
| 1926 | ALLEGHENY WOOD PROD | Braxton County, WV | Oil & Gas Property | Dec 2021 |
| 1927 | ALLEGRA | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 1928 | ALLEIN | Sterling County, TX | Oil & Gas Property | Nov 2025 |
| 1929 | ALLEMAN 1 | Haskell County, KS | Gas Property | Sep 2025 |
| 1930 | ALLEMAN, LENA K | Wood County, WV | Oil & Gas Property | Dec 2021 |
| 1931 | ALLEMAND | Converse County, WY | Oil & Gas Property | Dec 2025 |
| 1932 | ALLEMAND | Converse County, WY | Oil & Gas Property | Dec 2025 |
| 1933 | ALLEN | Pottawatomie County, OK | Oil Property | Oct 2025 |
| 1934 | ALLEN | Parker County, TX | Oil & Gas Property | Nov 2025 |
| 1935 | ALLEN | Garvin County, OK | Oil Property | Jun 2023 |
| 1936 | ALLEN | Eastland County, TX | Oil & Gas Property | Sep 2025 |
| 1937 | ALLEN | Alfalfa County, OK | Oil & Gas Property | Nov 2025 |
| 1938 | ALLEN | Union County, AR | Oil Property | May 2023 |
| 1939 | ALLEN | Wise County, TX | Oil & Gas Property | Nov 2025 |
| 1940 | ALLEN | Tulsa County, OK | Oil Property | Oct 2025 |
| 1941 | ALLEN | Magoffin County, KY | Oil Property | Dec 2014 |
| 1942 | ALLEN | Major County, OK | Oil & Gas Property | Oct 2025 |
| 1943 | ALLEN | Wayne County, MS | Oil & Gas Property | Nov 2025 |
| 1944 | ALLEN | Caddo County, OK | Oil & Gas Property | Oct 2025 |
| 1945 | ALLEN | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 1946 | ALLEN | Harvey County, KS | Oil Property | Jun 1986 |
| 1947 | ALLEN | Floyd County, KY | Oil & Gas Property | Dec 2023 |
| 1948 | ALLEN | McClain County, OK | Oil & Gas Property | Oct 2025 |
| 1949 | ALLEN | Guadalupe County, TX | Oil & Gas Property | Nov 2025 |
| 1950 | ALLEN | Yuma County, CO | Gas Property | Dec 2024 |
| 1951 | ALLEN | Crook County, WY | Oil & Gas Property | Dec 1991 |
| 1952 | ALLEN | Loving County, TX | Oil & Gas Property | Sep 2021 |
| 1953 | ALLEN | Woodson County, KS | Oil Property | Jun 2025 |
| 1954 | ALLEN | Throckmorton County, TX | Oil & Gas Property | Aug 2025 |
| 1955 | ALLEN | Pontotoc County, OK | Oil Property | Oct 2025 |
| 1956 | ALLEN | Big Horn County, WY | Oil & Gas Property | Nov 2025 |
| 1957 | ALLEN | San Juan County, NM | Oil & Gas Property | Nov 2025 |
| 1958 | ALLEN | Neosho County, KS | Gas Property | Sep 2025 |
| 1959 | ALLEN | Coffey County, KS | Oil Property | Sep 2025 |
| 1960 | ALLEN | Sterling County, TX | Oil & Gas Property | Nov 2025 |
| 1961 | ALLEN | Washington County, OH | Oil & Gas Property | Dec 2024 |
| 1962 | ALLEN | Stevens County, KS | Gas Property | Sep 2025 |
| 1963 | ALLEN | Weld County, CO | Oil & Gas Property | Jan 2019 |
| 1964 | ALLEN | Washington County, CO | Oil & Gas Property | Dec 2024 |
| 1965 | ALLEN | Moore County, TX | Oil & Gas Property | Nov 2025 |
| 1966 | ALLEN | Perry County, OH | Oil & Gas Property | Dec 2024 |
| 1967 | ALLEN | Duchesne County, UT | Oil & Gas Property | Nov 2025 |
| 1968 | ALLEN | Brown County, TX | Oil & Gas Property | Oct 2025 |
| 1969 | ALLEN | Ouachita County, AR | Oil & Gas Property | Sep 2025 |
| 1970 | ALLEN | Lafayette County, AR | Oil Property | Apr 1981 |
| 1971 | ALLEN | Stafford County, KS | Oil Property | Sep 2025 |
| 1972 | ALLEN | Norton County, KS | Oil Property | Apr 1980 |
| 1973 | ALLEN | Crawford County, KS | Oil Property | Dec 1993 |
| 1974 | ALLEN | Stephens County, OK | Oil Property | Jun 2019 |
| 1975 | ALLEN | Coal County, OK | Gas Property | Nov 2025 |
| 1976 | ALLEN | Atoka County, OK | Oil & Gas Property | Oct 2025 |
| 1977 | ALLEN | Stephens County, OK | Oil Property | Oct 2025 |
| 1978 | ALLEN | Williams County, ND | Oil & Gas Property | Dec 2025 |
| 1979 | ALLEN | Toole County, MT | Oil & Gas Property | Nov 2025 |
| 1980 | ALLEN | Union Parish, LA | Gas Property | Dec 2024 |
| 1981 | ALLEN | Harrison County, WV | Gas Property | Dec 2021 |
| 1982 | ALLEN | Montgomery County, KS | Oil Property | Oct 2024 |
| 1983 | ALLEN | Clay County, TX | Oil & Gas Property | Oct 2025 |
| 1984 | ALLEN | Palo Pinto County, TX | Oil & Gas Property | Aug 2014 |
| 1985 | ALLEN | Warren County, PA | Oil & Gas Property | Dec 1991 |
| 1986 | ALLEN | Caldwell County, TX | Oil & Gas Property | Nov 2025 |
| 1987 | ALLEN | Ouachita County, AR | Oil Property | Sep 2025 |
| 1988 | ALLEN | Tulsa County, OK | Oil Property | Oct 2025 |
| 1989 | ALLEN | Franklin County, AR | Gas Property | Oct 2016 |
| 1990 | ALLEN | Cattaraugus County, NY | Gas Property | Dec 2024 |
| 1991 | ALLEN | Brown County, TX | Oil & Gas Property | Nov 2025 |
| 1992 | ALLEN | Roger Mills County, OK | Oil & Gas Property | Nov 2025 |
| 1993 | ALLEN | Knott County, KY | Oil & Gas Property | Dec 2023 |
| 1994 | ALLEN | Roger Mills County, OK | Oil & Gas Property | Oct 2025 |
| 1995 | ALLEN | Montgomery County, KS | Oil Property | Sep 2025 |
| 1996 | ALLEN | Barton County, KS | Oil Property | Oct 2000 |
| 1997 | ALLEN | Texas County, OK | Gas Property | Oct 2025 |
| 1998 | ALLEN | Colorado County, TX | Oil & Gas Property | Jan 2022 |
| 1999 | ALLEN | Lasalle Parish, LA | Oil & Gas Property | Jan 2025 |
| 2000 | ALLEN | Texas County, OK | Oil & Gas Property | Jan 2020 |