| 1901 | ELK HORN | Rio Arriba County, NM | Gas Property | Jun 2025 |
| 1902 | ELK HORN COAL | Floyd County, KY | Gas Property | Dec 2023 |
| 1903 | ELK HORN FEDERAL 44X-36FXG | Golden Valley County, ND | Oil & Gas Property | Jul 2025 |
| 1904 | ELK HUNTER | Lavaca County, TX | Oil & Gas Property | Jun 2025 |
| 1905 | ELK LAKE SCHOOL DIST | Susquehanna County, PA | Gas Property | Jun 2025 |
| 1906 | ELK RIVER | Clay County, WV | Oil & Gas Property | Dec 2013 |
| 1907 | ELK RIVER | Nicholas County, WV | Oil & Gas Property | Dec 2021 |
| 1908 | ELK RIVER | Nicholas County, WV | Gas Property | Dec 2013 |
| 1909 | ELK RIVER COAL & LUMBER | Clay County, WV | Gas Property | Nov 2019 |
| 1910 | ELK RIVER LUMBER | Clay County, WV | Oil & Gas Property | Dec 2021 |
| 1911 | ELK RUN CO | Jefferson County, PA | Gas Property | Dec 2024 |
| 1912 | ELK SPRINGS | Moffat County, CO | Oil & Gas Property | May 2025 |
| 1913 | ELK STATE FOREST WARRANT 2 | Elk County, PA | Gas Property | Dec 2024 |
| 1914 | ELK UNIT | Brazos County, TX | Oil & Gas Property | Jun 2025 |
| 1915 | ELK UNIT | Atascosa County, TX | Oil & Gas Property | Jun 2025 |
| 1916 | ELK UNIT C-045194 303 | Park County, WY | Oil & Gas Property | Jul 2025 |
| 1917 | ELK UNIT PATENT 311 | Park County, WY | Oil & Gas Property | Jul 2025 |
| 1918 | ELK USA 11-17H | Mountrail County, ND | Oil & Gas Property | Jul 2025 |
| 1919 | ELK WALLOW 11 STATE | Eddy County, NM | Oil & Gas Property | Feb 2025 |
| 1920 | ELKAN | Lea County, NM | Oil & Gas Property | Mar 1996 |
| 1921 | ELKEM METALS CO | Fayette County, WV | Gas Property | Jun 2011 |
| 1922 | ELKHAIR | Washington County, OK | Oil Property | Jun 2025 |
| 1923 | ELKHEAD | Weld County, CO | Oil & Gas Property | Jul 2025 |
| 1924 | ELKHEAD 4144 | Reeves County, TX | Oil & Gas Property | Jun 2025 |
| 1925 | ELKHORN | Billings County, ND | Oil & Gas Property | Jul 2025 |
| 1926 | ELKHORN | Converse County, WY | Oil Property | Jun 2025 |
| 1927 | ELKHORN 54-1-40 | Loving County, TX | Oil & Gas Property | Jun 2025 |
| 1928 | ELKHORN 54-1-44 | Loving County, TX | Oil & Gas Property | Jun 2025 |
| 1929 | ELKHORN CO | Weld County, CO | Oil & Gas Property | Jun 2025 |
| 1930 | ELKHORN COAL | Floyd County, KY | Oil & Gas Property | Dec 2023 |
| 1931 | ELKHORN COAL CO | Letcher County, KY | Gas Property | Dec 2023 |
| 1932 | ELKHORN COAL CO | Floyd County, KY | Oil & Gas Property | Dec 2023 |
| 1933 | ELKHORN COAL CO | Floyd County, KY | Gas Property | Dec 2023 |
| 1934 | ELKHORN COAL CORP | Floyd County, KY | Gas Property | Dec 2023 |
| 1935 | ELKHORN COLL | Letcher County, KY | Oil & Gas Property | Dec 2023 |
| 1936 | ELKHORN RANCH 41-9HR | Billings County, ND | Oil & Gas Property | Jul 2025 |
| 1937 | ELKHORN WCU | Summit County, UT | Oil & Gas Property | Feb 2005 |
| 1938 | ELKIN | Midland County, TX | Oil & Gas Property | Jun 2020 |
| 1939 | ELKIN | Midland County, TX | Oil & Gas Property | Jun 2025 |
| 1940 | ELKIN | Upton County, TX | Oil & Gas Property | Jun 2025 |
| 1941 | ELKIN-CRAWFORD 34 | Midland County, TX | Oil & Gas Property | Jun 2025 |
| 1942 | ELKIN-ESTES 34 | Midland County, TX | Oil & Gas Property | Jun 2025 |
| 1943 | ELKIN-NICHOLS UNIT | Midland County, TX | Oil & Gas Property | Jun 2024 |
| 1944 | ELKINS | Tarrant County, TX | Oil & Gas Property | Jun 2025 |
| 1945 | ELKINS | Runnels County, TX | Oil & Gas Property | May 2025 |
| 1946 | ELKINS | Washington County, OH | Oil & Gas Property | Dec 2024 |
| 1947 | ELKINS | Webster Parish, LA | Oil & Gas Property | Aug 1995 |
| 1948 | ELKINS | Ventura County, CA | Oil & Gas Property | Jul 2025 |
| 1949 | ELKINS DANIEL | Bastrop County, TX | Oil & Gas Property | Jun 2024 |
| 1950 | ELKINS MOLLIE | Young County, TX | Oil & Gas Property | Jun 2025 |
| 1951 | ELKINS UNIT | Tarrant County, TX | Gas Property | Jun 2025 |
| 1952 | ELKINS, FRANK | Lincoln County, WV | Oil & Gas Property | Dec 2021 |
| 1953 | ELKINS, SAMUEL J 6 | Pike County, KY | Oil & Gas Property | Dec 2023 |
| 1954 | ELKINS, TRULY | Pike County, KY | Gas Property | Dec 2023 |
| 1955 | ELKINS-ATRELLE | Midland County, TX | Oil & Gas Property | Jun 2025 |
| 1956 | ELKRUN | Columbiana County, OH | Gas Property | Jun 2025 |
| 1957 | ELKRUN FAIRMO | Columbiana County, OH | Gas Property | Jun 2025 |
| 1958 | ELKRUN-BAKER | Columbiana County, OH | Gas Property | Jun 2025 |
| 1959 | ELKRUN-SCHEEL | Columbiana County, OH | Gas Property | Jun 2025 |
| 1960 | ELL 21-1H | Dunn County, ND | Oil & Gas Property | Jul 2025 |
| 1961 | ELLA | Kay County, OK | Oil Property | Mar 2024 |
| 1962 | ELLA | Barber County, KS | Oil Property | May 2025 |
| 1963 | ELLA | Borden County, TX | Oil & Gas Property | Jun 2025 |
| 1964 | ELLA | Dewey County, OK | Oil & Gas Property | Jul 2025 |
| 1965 | ELLA | Cass County, TX | Oil Property | Jun 2025 |
| 1966 | ELLA | Upton County, TX | Oil & Gas Property | Jun 2025 |
| 1967 | ELLA | Los Angeles County, CA | Oil & Gas Property | Jul 2025 |
| 1968 | ELLA | Tarrant County, TX | Gas Property | Jun 2025 |
| 1969 | ELLA | Ellis County, KS | Oil Property | Apr 2025 |
| 1970 | ELLA 114 | Reagan County, TX | Oil & Gas Property | Sep 2019 |
| 1971 | ELLA 39-15 | Upton County, TX | Oil & Gas Property | May 2025 |
| 1972 | ELLA 4-15-163-102 | Divide County, ND | Oil & Gas Property | Jul 2025 |
| 1973 | ELLA COOK | Garvin County, OK | Oil & Gas Property | Jun 2025 |
| 1974 | ELLA FE | Converse County, WY | Oil & Gas Property | Jul 2025 |
| 1975 | ELLA FLADELAND 12-12TFH | Mountrail County, ND | Oil & Gas Property | Jul 2025 |
| 1976 | ELLA G LEES | Adams County, MS | Oil & Gas Property | Jun 2025 |
| 1977 | ELLA HARJO | Seminole County, OK | Oil Property | Feb 2018 |
| 1978 | ELLA HUNTER | Caddo Parish, LA | Oil & Gas Property | Jan 2025 |
| 1979 | ELLA HURD | Indiana County, PA | Gas Property | Dec 2024 |
| 1980 | ELLA JONES | Creek County, OK | Oil & Gas Property | Jun 2024 |
| 1981 | ELLA MAE | Ellis County, OK | Oil & Gas Property | Jun 2025 |
| 1982 | ELLA MAE | Cheyenne County, KS | Gas Property | May 2025 |
| 1983 | ELLA MANY RIBS | McKenzie County, ND | Oil & Gas Property | May 2025 |
| 1984 | ELLA MARIE | Milam County, TX | Oil & Gas Property | Jun 2025 |
| 1985 | ELLA MARIE 2759 42-9H | Roosevelt County, MT | Oil & Gas Property | Jul 2025 |
| 1986 | ELLA REE 1-15 | Stephens County, OK | Oil & Gas Property | Jun 2025 |
| 1987 | ELLA ROSE 1 | San Juan County, NM | Oil & Gas Property | Jun 2025 |
| 1988 | ELLA USA 11-16H | Mountrail County, ND | Oil & Gas Property | Jul 2025 |
| 1989 | ELLA UT 14-7 4-2-7-6 | Duchesne County, UT | Oil & Gas Property | Jul 2025 |
| 1990 | ELLARD 19 | Okmulgee County, OK | Oil Property | Feb 1994 |
| 1991 | ELLBOGEN | Campbell County, WY | Gas Property | Nov 2007 |
| 1992 | ELLBOGEN 4471-4 | Campbell County, WY | Oil & Gas Property | Jul 2025 |
| 1993 | ELLE | Alfalfa County, OK | Oil & Gas Property | Oct 2024 |
| 1994 | ELLEDGE | Edwards County, KS | Oil & Gas Property | Jun 2022 |
| 1995 | ELLEN | Grady County, OK | Oil & Gas Property | May 2025 |
| 1996 | ELLEN | Woods County, OK | Oil & Gas Property | May 2021 |
| 1997 | ELLEN | Cheyenne County, KS | Oil Property | May 2025 |
| 1998 | ELLEN | Payne County, OK | Oil & Gas Property | Nov 2017 |
| 1999 | ELLEN 8 | Hemphill County, TX | Oil & Gas Property | Jun 2025 |
| 2000 | ELLEN BROWN | Pittsburg County, OK | Gas Property | Jun 2025 |