| 27001 | CORNING MINING CO | Perry County, OH | Oil Property | Dec 2012 |
| 27002 | CORNINGSTONE | Howard County, TX | Oil & Gas Property | Nov 2025 |
| 27003 | CORNINGSTONE STATE | Reeves County, TX | Oil & Gas Property | Nov 2025 |
| 27004 | CORNISH | Lafayette County, AR | Oil & Gas Property | Jun 2025 |
| 27005 | CORNISH | Weld County, CO | Oil & Gas Property | Aug 2025 |
| 27006 | CORNPLANTER | Forest County, PA | Oil Property | Dec 2024 |
| 27007 | CORNWALL | Lycoming County, PA | Gas Property | Nov 2025 |
| 27008 | CORNWALL B | Lycoming County, PA | Gas Property | Nov 2025 |
| 27009 | CORNWALL C | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 27010 | CORNWALL EAST UNIT | Lycoming County, PA | Gas Property | Nov 2025 |
| 27011 | CORNWALL FEDERAL | Chaves County, NM | Oil & Gas Property | Nov 2025 |
| 27012 | CORNWALL NORTH UNIT | Lycoming County, PA | Gas Property | Nov 2025 |
| 27013 | CORNWALL TURKEY UNIT | Lycoming County, PA | Gas Property | Nov 2025 |
| 27014 | CORNWELL | Haskell County, KS | Gas Property | Sep 2019 |
| 27015 | CORNWELL | Stafford County, KS | Oil Property | Sep 2022 |
| 27016 | CORNWELL | Stafford County, KS | Oil Property | May 2001 |
| 27017 | CORNWELL | Stafford County, KS | Oil Property | Sep 2025 |
| 27018 | CORNWELL | Grant County, KS | Gas Property | Sep 2025 |
| 27019 | CORONA | Garvin County, OK | Oil & Gas Property | Oct 2025 |
| 27020 | CORONA | Sublette County, WY | Oil & Gas Property | Oct 2025 |
| 27021 | CORONA 25 26 FEDERAL COM | Eddy County, NM | Oil & Gas Property | Nov 2025 |
| 27022 | CORONA JOHN | Milam County, TX | Oil & Gas Property | Nov 2025 |
| 27023 | CORONADO | Hughes County, OK | Gas Property | Oct 2025 |
| 27024 | CORONADO | Irion County, TX | Oil & Gas Property | Nov 2025 |
| 27025 | CORONADO | Campbell County, WY | Oil & Gas Property | Oct 2025 |
| 27026 | CORONADO | Lincoln County, WY | Oil & Gas Property | Sep 2001 |
| 27027 | CORONADO 18 | Wagoner County, OK | Gas Property | Jul 2017 |
| 27028 | CORONADO 1H | San Augustine County, TX | Oil & Gas Property | Nov 2025 |
| 27029 | CORONADO 35 FEDERAL | Lea County, NM | Oil & Gas Property | Nov 2025 |
| 27030 | CORONADO-CO | San Augustine County, TX | Gas Property | Nov 2025 |
| 27031 | CORONET 2413 | Divide County, ND | Oil & Gas Property | Dec 2025 |
| 27032 | COROTHERS, R | Upshur County, WV | Gas Property | Dec 2019 |
| 27033 | CORP.FEE | Kern County, CA | Oil & Gas Property | Nov 2025 |
| 27034 | CORPORAL FEDERAL COM | Campbell County, WY | Oil & Gas Property | Oct 2025 |
| 27035 | CORPRON | Mountrail County, ND | Oil & Gas Property | Dec 2025 |
| 27036 | CORR | Sedgwick County, KS | Oil Property | Sep 2025 |
| 27037 | CORRAL 1-36HD | Dunn County, ND | Oil & Gas Property | Nov 2025 |
| 27038 | CORRAL 16 4 STATE FEDERAL COM | Eddy County, NM | Oil & Gas Property | Nov 2025 |
| 27039 | CORRAL 16 9 STATE FEDERAL COM | Eddy County, NM | Oil & Gas Property | Nov 2025 |
| 27040 | CORRAL 17 5 FEDERAL COM | Eddy County, NM | Oil & Gas Property | Nov 2025 |
| 27041 | CORRAL 17 8 FEDERAL COM | Eddy County, NM | Oil & Gas Property | Nov 2025 |
| 27042 | CORRAL BLUFF 11 14 FEDERAL COM | Eddy County, NM | Oil & Gas Property | Nov 2025 |
| 27043 | CORRAL CANYON | Eddy County, NM | Oil & Gas Property | Nov 2025 |
| 27044 | CORRAL CREEK | Rio Blanco County, CO | Oil & Gas Property | Oct 2025 |
| 27045 | CORRAL CREEK | Washakie County, WY | Oil & Gas Property | Jan 2019 |
| 27046 | CORRAL CREEK 14-14SH | Fallon County, MT | Oil & Gas Property | Nov 2025 |
| 27047 | CORRAL DRAW | Eddy County, NM | Oil & Gas Property | Nov 2025 |
| 27048 | CORRAL DRAW AQH FEDERAL | Eddy County, NM | Oil & Gas Property | Aug 2021 |
| 27049 | CORRAL FLY | Eddy County, NM | Oil & Gas Property | Nov 2025 |
| 27050 | CORRAL FLY 35 26 FEDERAL COM | Eddy County, NM | Oil & Gas Property | Nov 2025 |
| 27051 | CORRAL GORGE 12 13 FEDERAL COM | Eddy County, NM | Oil & Gas Property | Nov 2025 |
| 27052 | CORRALES CANYON UNIT | Sandoval County, NM | Oil & Gas Property | Nov 2025 |
| 27053 | CORRELL | Ochiltree County, TX | Oil & Gas Property | Oct 2025 |
| 27054 | CORRELL | Haskell County, KS | Oil Property | Aug 2014 |
| 27055 | CORRELL | Payne County, OK | Oil & Gas Property | Aug 1998 |
| 27056 | CORRELL | Stark County, OH | Oil & Gas Property | Dec 2024 |
| 27057 | CORRELL A | Seward County, KS | Gas Property | Jul 2015 |
| 27058 | CORRETTO 9 | Martin County, TX | Oil & Gas Property | Nov 2025 |
| 27059 | CORRIDONI | Indiana County, PA | Gas Property | Dec 2024 |
| 27060 | CORRIGAN | Lea County, NM | Oil & Gas Property | Nov 2025 |
| 27061 | CORRIGAN | Seward County, KS | Gas Property | Sep 2025 |
| 27062 | CORRIGAN | Andrews County, TX | Oil & Gas Property | Nov 2025 |
| 27063 | CORRIGAN COWDEN UNIT | Ector County, TX | Oil & Gas Property | Nov 2025 |
| 27064 | CORRIGAN STATE | Pecos County, TX | Oil & Gas Property | Nov 2025 |
| 27065 | CORRIGEUX | Glacier County, MT | Oil Property | Aug 2023 |
| 27066 | CORRY | Jack County, TX | Oil & Gas Property | Oct 2025 |
| 27067 | CORRY | Greene County, PA | Gas Property | Nov 2025 |
| 27068 | CORRY COUNTRY CLUB | Erie County, PA | Gas Property | Dec 1996 |
| 27069 | CORRY GAS UNIT | Robertson County, TX | Oil & Gas Property | Nov 2025 |
| 27070 | CORSAIR | Woods County, OK | Oil & Gas Property | Oct 2025 |
| 27071 | CORSAIR | Greene County, PA | Gas Property | Nov 2025 |
| 27072 | CORSAIR 27 FEDERAL | Lea County, NM | Oil & Gas Property | Jun 2025 |
| 27073 | CORSAIR C26-20 | Loving County, TX | Oil & Gas Property | Nov 2025 |
| 27074 | CORSAIR STATE | Eddy County, NM | Oil & Gas Property | Nov 2025 |
| 27075 | CORSAIR STATE UNIT | Reeves County, TX | Oil & Gas Property | Nov 2025 |
| 27076 | CORSAIR-ZAMORA | Webb County, TX | Gas Property | Nov 2025 |
| 27077 | CORSE 11/14 | Ellis County, OK | Oil & Gas Property | Oct 2025 |
| 27078 | CORSE, LAURA | Ellis County, OK | Oil & Gas Property | Oct 2025 |
| 27079 | CORSICA /BEND CONGL | Stonewall County, TX | Oil & Gas Property | Oct 2023 |
| 27080 | CORSICA UNIT | Stonewall County, TX | Oil & Gas Property | Nov 2025 |
| 27081 | CORSICAN 16 | Ward County, TX | Oil & Gas Property | Nov 2025 |
| 27082 | CORSICAN FEDERAL | Mountrail County, ND | Oil & Gas Property | Nov 2025 |
| 27083 | CORSICANA INDUSTRIAL | Navarro County, TX | Oil & Gas Property | Oct 2025 |
| 27084 | CORSICANA-HONAKER | Wichita County, TX | Oil & Gas Property | Nov 2025 |
| 27085 | CORSON | Glasscock County, TX | Oil & Gas Property | Sep 2024 |
| 27086 | CORSON UNIT | Lycoming County, PA | Gas Property | Nov 2025 |
| 27087 | CORTES | Irion County, TX | Oil & Gas Property | Nov 2025 |
| 27088 | CORTEZ | Kern County, CA | Oil & Gas Property | Oct 2025 |
| 27089 | CORTEZ | Victoria County, TX | Oil & Gas Property | Nov 2025 |
| 27090 | CORTEZ | La Salle County, TX | Oil & Gas Property | Nov 2025 |
| 27091 | CORTEZ | Webster Parish, LA | Oil & Gas Property | Jan 2025 |
| 27092 | CORTEZ-WHELESS | Victoria County, TX | Oil & Gas Property | Nov 2025 |
| 27093 | CORTLAND MYERS | Lea County, NM | Oil & Gas Property | Nov 2025 |
| 27094 | CORUM, JOANN | Clay County, KY | Oil & Gas Property | Dec 2023 |
| 27095 | CORUM, OTTO | Hopkins County, KY | Oil Property | Dec 2020 |
| 27096 | CORVETTE | McMullen County, TX | Oil & Gas Property | Nov 2025 |
| 27097 | CORVETTE 4 33 FEDERAL COM | Lea County, NM | Oil & Gas Property | Nov 2025 |
| 27098 | CORVO FEDERAL | Lea County, NM | Oil & Gas Property | Nov 2025 |
| 27099 | CORVUS | Uintah County, UT | Oil & Gas Property | Nov 2025 |
| 27100 | CORVUS 2734-09H | Converse County, WY | Oil & Gas Property | Oct 2025 |