| 1901 | KEYSTONE FERNANDES | Winkler County, TX | Oil & Gas Property | Apr 2025 |
| 1902 | KEYSTONE HOLT UNIT | Winkler County, TX | Oil & Gas Property | Oct 2022 |
| 1903 | KEYSTONE SILURIAN UNIT | Winkler County, TX | Oil & Gas Property | Apr 2025 |
| 1904 | KEYSTONE STATE PARK | Westmoreland County, PA | Gas Property | Dec 2024 |
| 1905 | KEYSTONE TRUST 34-10-3 | Jefferson County, OH | Oil & Gas Property | Mar 2025 |
| 1906 | KEYSTONE UNIT MIRABELLI KEYSTONE 1H | Wyoming County, PA | Gas Property | May 2025 |
| 1907 | KEYSTONE UNLIMITED, LLC 19-1 | Kalamazoo County, MI | Oil & Gas Property | May 2025 |
| 1908 | KEZAR,R | Labette County, KS | Gas Property | Mar 2025 |
| 1909 | KG TRUST | La Plata County, CO | Gas Property | May 2025 |
| 1910 | KGA 1 | Yuma County, CO | Gas Property | May 2025 |
| 1911 | KGA 2 | Yuma County, CO | Gas Property | May 2025 |
| 1912 | KGC 31-6H | Dunn County, ND | Oil & Gas Property | May 2025 |
| 1913 | KGFCU | Waller County, TX | Oil & Gas Property | Apr 2025 |
| 1914 | KGFU | Fort Bend County, TX | Oil & Gas Property | Apr 2025 |
| 1915 | KGFU 2 W7 | Waller County, TX | Oil & Gas Property | Apr 2025 |
| 1916 | KGS-A | Eddy County, NM | Oil & Gas Property | May 2025 |
| 1917 | KHA J | Webb County, TX | Oil & Gas Property | Apr 2025 |
| 1918 | KHA N | Webb County, TX | Oil & Gas Property | Apr 2025 |
| 1919 | KHA S | Webb County, TX | Oil & Gas Property | Apr 2025 |
| 1920 | KHAKI CAMPBELL | Weld County, CO | Oil & Gas Property | May 2025 |
| 1921 | KHC 33-2 | Ward County, TX | Oil & Gas Property | Apr 2025 |
| 1922 | KHE FEE | Webb County, TX | Oil & Gas Property | Apr 2025 |
| 1923 | KHILLING | Sebastian County, AR | Gas Property | Aug 2013 |
| 1924 | KHOURI UNIT | Washington County, PA | Gas Property | May 2025 |
| 1925 | KHRAISH | Denton County, TX | Oil & Gas Property | Apr 2025 |
| 1926 | KIAWAH BFQ FEDERAL | Eddy County, NM | Oil & Gas Property | Jan 2017 |
| 1927 | KIAWAH K | San Augustine County, TX | Gas Property | Mar 2025 |
| 1928 | KIBBE | Morton County, KS | Gas Property | Mar 2025 |
| 1929 | KIBBE | Erie County, PA | Gas Property | Dec 2020 |
| 1930 | KIBBE | Harrison County, TX | Oil & Gas Property | Apr 2025 |
| 1931 | KIBBE-MOOS | Duval County, TX | Oil & Gas Property | Apr 2025 |
| 1932 | KIBLER | Jack County, TX | Oil & Gas Property | Apr 2025 |
| 1933 | KIBLER | Trumbull County, OH | Oil & Gas Property | Mar 2025 |
| 1934 | KIBLER | Portage County, OH | Oil & Gas Property | Dec 2023 |
| 1935 | KIBLER | Wyoming County, NY | Gas Property | Dec 2024 |
| 1936 | KIBLER | Columbiana County, OH | Oil & Gas Property | Dec 2024 |
| 1937 | KIBLER | Crawford County, AR | Gas Property | Jun 2024 |
| 1938 | KIBLINGER | Hill County, TX | Gas Property | Apr 2025 |
| 1939 | KIBUK | Armstrong County, PA | Gas Property | Dec 2024 |
| 1940 | KICK | Holmes County, OH | Oil Property | Dec 2024 |
| 1941 | KICK LARRY | Holmes County, OH | Oil & Gas Property | Dec 2011 |
| 1942 | KICK LESTER | Holmes County, OH | Oil & Gas Property | Dec 1993 |
| 1943 | KICKAPOO | Reeves County, TX | Oil & Gas Property | Apr 2025 |
| 1944 | KICKAPOO CREEK | Smith County, TX | Oil & Gas Property | Apr 2025 |
| 1945 | KICKENDAHL UNIT 1 | Dewitt County, TX | Oil & Gas Property | Apr 2025 |
| 1946 | KICKING WOLF 18-09-22 | Kingfisher County, OK | Oil & Gas Property | Apr 2025 |
| 1947 | KID CREEK | Bowman County, ND | Oil & Gas Property | May 2025 |
| 1948 | KIDD | Tuscarawas County, OH | Oil & Gas Property | Dec 2023 |
| 1949 | KIDD | Seminole County, OK | Gas Property | May 2010 |
| 1950 | KIDD | Hood County, TX | Oil & Gas Property | Apr 2025 |
| 1951 | KIDD | Licking County, OH | Oil & Gas Property | Dec 2024 |
| 1952 | KIDD | Wilson County, KS | Gas Property | Mar 2025 |
| 1953 | KIDD | Dawson County, TX | Oil & Gas Property | Mar 2025 |
| 1954 | KIDD | Seminole County, OK | Oil & Gas Property | Jul 2015 |
| 1955 | KIDD 1-19H1 | Divide County, ND | Oil & Gas Property | May 2025 |
| 1956 | KIDD 10-15 | Van Buren County, AR | Gas Property | Jul 2024 |
| 1957 | KIDD 21-12-6 | Harrison County, OH | Oil & Gas Property | Mar 2025 |
| 1958 | KIDD LD22-7 | Weld County, CO | Oil & Gas Property | May 2025 |
| 1959 | KIDD MARGARET | Brazoria County, TX | Oil & Gas Property | Apr 2025 |
| 1960 | KIDD TRUST 10-13 | Van Buren County, AR | Gas Property | Jul 2024 |
| 1961 | KIDD UNIT | Gonzales County, TX | Oil & Gas Property | Apr 2025 |
| 1962 | KIDDER | Chautauqua County, NY | Gas Property | Dec 2024 |
| 1963 | KIDDER | Chautauqua County, NY | Gas Property | Dec 2024 |
| 1964 | KIDDER | Osceola County, MI | Oil Property | May 2025 |
| 1965 | KIDWELL | Knox County, OH | Oil Property | Dec 2024 |
| 1966 | KIDWELL | Caddo County, OK | Oil & Gas Property | Apr 2025 |
| 1967 | KIDWELL | Knox County, OH | Oil & Gas Property | Dec 2023 |
| 1968 | KIEDAISCH | Atoka County, OK | Gas Property | Apr 2025 |
| 1969 | KIEFEL | Williams County, ND | Oil & Gas Property | May 2025 |
| 1970 | KIEFER | Dawson County, TX | Oil & Gas Property | Apr 2025 |
| 1971 | KIEFER C | Zavala County, TX | Oil & Gas Property | Feb 2025 |
| 1972 | KIEFER GEORGE W U | Weld County, CO | Oil & Gas Property | May 2025 |
| 1973 | KIEFFER | Hocking County, OH | Oil & Gas Property | Dec 2023 |
| 1974 | KIEFFER | Morris County, KS | Oil Property | Mar 2025 |
| 1975 | KIEFFER UNIT | Greene County, PA | Gas Property | May 2025 |
| 1976 | KIEHL | Crook County, WY | Oil & Gas Property | May 2025 |
| 1977 | KIEKE | Haskell County, TX | Oil & Gas Property | Apr 2025 |
| 1978 | KIELAR D | Susquehanna County, PA | Gas Property | May 2025 |
| 1979 | KIENER | Perry County, OH | Oil & Gas Property | Dec 2024 |
| 1980 | KIER | Dundy County, NE | Oil Property | Dec 2024 |
| 1981 | KIERA | Kingfisher County, OK | Oil & Gas Property | Apr 2025 |
| 1982 | KIERA 1506 | Kingfisher County, OK | Gas Property | Apr 2025 |
| 1983 | KIERSEY | Haskell County, TX | Oil & Gas Property | Apr 2025 |
| 1984 | KIESCHNICK | San Patricio County, TX | Oil & Gas Property | Aug 2024 |
| 1985 | KIESCHNICK UNIT | Montague County, TX | Oil & Gas Property | Apr 2025 |
| 1986 | KIESLING | Weston County, WY | Oil Property | Nov 2024 |
| 1987 | KIESLING | Weston County, WY | Oil Property | Oct 2024 |
| 1988 | KIESLING,A.E. & DIXON,T.K | Harris County, TX | Oil & Gas Property | Mar 2003 |
| 1989 | KIESSLING, TERRY & HELEN PEN2 | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 1990 | KIEWIT | Sheridan County, WY | Gas Property | Sep 2013 |
| 1991 | KIFER | Armstrong County, PA | Gas Property | Dec 2024 |
| 1992 | KIFER ROZELLA | Gonzales County, TX | Oil & Gas Property | Mar 2025 |
| 1993 | KIFF WHITE | Hansford County, TX | Oil & Gas Property | Apr 2025 |
| 1994 | KIGER | Greene County, PA | Gas Property | Dec 2024 |
| 1995 | KIGER B | Greene County, PA | Gas Property | Dec 2019 |
| 1996 | KIGHT | Seminole County, OK | Oil & Gas Property | Dec 2006 |
| 1997 | KIGHT | Beaver County, OK | Oil & Gas Property | Apr 2025 |
| 1998 | KIGHT JUDITH WI | Stephens County, TX | Oil & Gas Property | Apr 2025 |
| 1999 | KIGHT, M | Calhoun County, WV | Oil & Gas Property | Dec 2021 |
| 2000 | KIGHTLINGER | Logan County, OK | Gas Property | Oct 2022 |