| 901 | CHRISTMAN | Hocking County, OH | Oil & Gas Property | Dec 2022 |
| 902 | CHRISTMAN | Monroe County, OH | Oil & Gas Property | Dec 2023 |
| 903 | CHRISTMAN | Monroe County, OH | Oil & Gas Property | Dec 2022 |
| 904 | CHRISTMAN | Monroe County, OH | Oil & Gas Property | Dec 2022 |
| 905 | CHRISTOPHER | Washington County, OH | Oil & Gas Property | Dec 2023 |
| 906 | CHRISTY | Monroe County, OH | Oil & Gas Property | Dec 2021 |
| 907 | CHRISTY | Washington County, OH | Oil & Gas Property | Dec 2022 |
| 908 | CHRONIN, JOS | Monroe County, OH | Oil Property | Dec 2023 |
| 909 | CHUMNEY | Tuscarawas County, OH | Oil & Gas Property | Dec 2022 |
| 910 | CHVOSTA | Portage County, OH | Oil & Gas Property | Dec 2015 |
| 911 | CIACCI 22-11-4 | Jefferson County, OH | Oil & Gas Property | Dec 2023 |
| 912 | CIRCOSTA | Monroe County, OH | Gas Property | Dec 2023 |
| 913 | CISLER | Washington County, OH | Oil & Gas Property | Dec 2023 |
| 914 | CITY OF | Trumbull County, OH | Oil & Gas Property | Dec 2023 |
| 915 | CITY OF ALLIANCE | Stark County, OH | Oil & Gas Property | Dec 2022 |
| 916 | CITY OF BARBERTON | Summit County, OH | Oil & Gas Property | Dec 1994 |
| 917 | CITY OF BROADVIEW HEIGHTS | Cuyahoga County, OH | Oil & Gas Property | Dec 2022 |
| 918 | CITY OF CAMBRIDGE | Guernsey County, OH | Oil & Gas Property | Dec 2023 |
| 919 | CITY OF CANT | Stark County, OH | Oil & Gas Property | Dec 2022 |
| 920 | CITY OF CLEVELAND | Cuyahoga County, OH | Oil & Gas Property | Dec 2023 |
| 921 | CITY OF CUYAHOGA FALLS | Summit County, OH | Oil & Gas Property | Dec 2023 |
| 922 | CITY OF LYNDHURST | Cuyahoga County, OH | Oil & Gas Property | Dec 2023 |
| 923 | CITY OF MACEDONIA | Summit County, OH | Oil & Gas Property | Dec 1998 |
| 924 | CITY OF YOUNGSTOWN | Mahoning County, OH | Oil & Gas Property | Dec 2023 |
| 925 | CLAGGETT | Licking County, OH | Oil & Gas Property | Dec 1990 |
| 926 | CLAPP | Medina County, OH | Oil Property | Dec 2023 |
| 927 | CLAPPER | Stark County, OH | Oil & Gas Property | Dec 2023 |
| 928 | CLAPPER | Muskingum County, OH | Oil & Gas Property | Dec 2022 |
| 929 | CLARA UNIT | Monroe County, OH | Oil & Gas Property | Dec 2023 |
| 930 | CLARENCE | Washington County, OH | Oil & Gas Property | Dec 2023 |
| 931 | CLARENCE | Coshocton County, OH | Oil & Gas Property | Dec 2021 |
| 932 | CLARENCE | Washington County, OH | Oil & Gas Property | Dec 2023 |
| 933 | CLARENCE HESS | Morgan County, OH | Oil & Gas Property | Dec 2023 |
| 934 | CLARK | Belmont County, OH | Oil & Gas Property | Dec 2023 |
| 935 | CLARK | Coshocton County, OH | Oil & Gas Property | Dec 1991 |
| 936 | CLARK | Portage County, OH | Oil & Gas Property | Dec 2022 |
| 937 | CLARK | Wayne County, OH | Oil & Gas Property | Dec 2023 |
| 938 | CLARK | Ashtabula County, OH | Oil & Gas Property | Dec 2022 |
| 939 | CLARK | Washington County, OH | Oil & Gas Property | Dec 2023 |
| 940 | CLARK | Guernsey County, OH | Oil & Gas Property | Dec 2023 |
| 941 | CLARK & THELMA AUSTIN | Ashland County, OH | Oil & Gas Property | Dec 2023 |
| 942 | CLARK HEIRS | Morgan County, OH | Oil & Gas Property | Dec 2018 |
| 943 | CLARK-MORRISON | Harrison County, OH | Oil & Gas Property | Dec 2023 |
| 944 | CLARKE | Tuscarawas County, OH | Oil & Gas Property | Dec 2023 |
| 945 | CLARKE | Tuscarawas County, OH | Oil & Gas Property | Dec 2023 |
| 946 | CLARKS HILLCREST | Washington County, OH | Oil & Gas Property | Dec 2011 |
| 947 | CLAUGUS | Monroe County, OH | Oil & Gas Property | Dec 2023 |
| 948 | CLAUS | Monroe County, OH | Oil & Gas Property | Dec 2023 |
| 949 | CLAUSS UNIT | Monroe County, OH | Oil & Gas Property | Dec 2022 |
| 950 | CLAY | Harrison County, OH | Oil & Gas Property | Dec 2023 |
| 951 | CLAY | Ashtabula County, OH | Oil & Gas Property | Dec 2022 |
| 952 | CLAY EAST UNIT 1H | Noble County, OH | Oil & Gas Property | Dec 2023 |
| 953 | CLAY UNIT 1H | Noble County, OH | Oil & Gas Property | Dec 2023 |
| 954 | CLAYCRAFT | Perry County, OH | Oil & Gas Property | Dec 2010 |
| 955 | CLAYPOOL | Licking County, OH | Oil Property | Dec 2022 |
| 956 | CLAYS PARK | Stark County, OH | Oil & Gas Property | Dec 2010 |
| 957 | CLAYTON B | Perry County, OH | Oil Property | Dec 2001 |
| 958 | CLEANERS HANG | Stark County, OH | Oil & Gas Property | Dec 2023 |
| 959 | CLEGG | Monroe County, OH | Oil Property | Dec 2023 |
| 960 | CLEMENS BECKER | Noble County, OH | Oil & Gas Property | Dec 2022 |
| 961 | CLEVELAND | Wayne County, OH | Oil & Gas Property | Dec 2022 |
| 962 | CLEVELAND | Wayne County, OH | Oil & Gas Property | Dec 2023 |
| 963 | CLEVELAND B | Harrison County, OH | Oil & Gas Property | Dec 2023 |
| 964 | CLEVELAND BOY SCOUTS OF AMERICA | Lorain County, OH | Oil & Gas Property | Dec 2022 |
| 965 | CLEVELAND CATHOLIC | Medina County, OH | Oil & Gas Property | Dec 1995 |
| 966 | CLEVELAND HIGHLAND | Cuyahoga County, OH | Oil & Gas Property | Dec 2023 |
| 967 | CLEVELAND METROP | Medina County, OH | Oil & Gas Property | Dec 2022 |
| 968 | CLEVELAND QUARRIES | Erie County, OH | Oil & Gas Property | Dec 2023 |
| 969 | CLEVELAND/SENECA GOLF COURSE | Cuyahoga County, OH | Oil & Gas Property | Dec 2023 |
| 970 | CLIFFORD CHANEY | Washington County, OH | Oil & Gas Property | Dec 2023 |
| 971 | CLINE | Washington County, OH | Oil & Gas Property | Dec 2022 |
| 972 | CLINE | Monroe County, OH | Oil & Gas Property | Dec 2023 |
| 973 | CLINE | Washington County, OH | Oil & Gas Property | Dec 2023 |
| 974 | CLINE | Licking County, OH | Oil & Gas Property | Dec 2022 |
| 975 | CLINE | Washington County, OH | Oil & Gas Property | Dec 2023 |
| 976 | CLINE DAV | Washington County, OH | Oil & Gas Property | Dec 2022 |
| 977 | CLINGER | Morrow County, OH | Oil Property | Dec 2011 |
| 978 | CLINTON OIL | Ashtabula County, OH | Oil & Gas Property | Dec 2015 |
| 979 | CLINTON SLAUGHTER | Muskingum County, OH | Oil & Gas Property | Dec 2013 |
| 980 | CLOSE | Holmes County, OH | Oil & Gas Property | Dec 2023 |
| 981 | CLOSE | Washington County, OH | Oil & Gas Property | Dec 2022 |
| 982 | CLOUSE | Perry County, OH | Oil & Gas Property | Dec 2022 |
| 983 | CLUB NE SMF JF | Jefferson County, OH | Gas Property | Dec 2023 |
| 984 | CLUB NW SMF JF | Jefferson County, OH | Gas Property | Dec 2023 |
| 985 | CLUB SE SMF JF 8H | Jefferson County, OH | Gas Property | Dec 2023 |
| 986 | CLUTTER | Knox County, OH | Oil & Gas Property | Dec 2022 |
| 987 | CLYDE HENDERSON | Perry County, OH | Oil & Gas Property | Dec 2014 |
| 988 | CNGD-ABRAMS | Geauga County, OH | Oil & Gas Property | Dec 2008 |
| 989 | CNX UNIT OH121000 | Noble County, OH | Oil & Gas Property | Dec 2021 |
| 990 | COAD OXF GR | Guernsey County, OH | Oil & Gas Property | Dec 2023 |
| 991 | COAKLEY | Hocking County, OH | Oil & Gas Property | Dec 2022 |
| 992 | COAL UNIT | Noble County, OH | Oil & Gas Property | Dec 2023 |
| 993 | COBLE | Perry County, OH | Oil & Gas Property | Dec 2018 |
| 994 | COBLE FLORENCE | Perry County, OH | Oil Property | Dec 2022 |
| 995 | COBLENTZ | Holmes County, OH | Oil & Gas Property | Dec 2022 |
| 996 | COBLENTZ | Holmes County, OH | Oil & Gas Property | Dec 2022 |
| 997 | COBRA CDZ HR | Harrison County, OH | Oil & Gas Property | Dec 2023 |
| 998 | COCHE | Perry County, OH | Oil & Gas Property | Dec 2002 |
| 999 | COCHRAN | Licking County, OH | Oil Property | Dec 2016 |
| 1000 | COCHRELL | Wayne County, OH | Oil & Gas Property | Dec 2023 |