Oil or gas well record in the Kentucky Geological Survey data repository.Well Number: 20W Original Operator: GULF OIL CO, INC Farm Name: BIG SINKING UNITTRACT B Permit Date: 4/7/1961 Completion Date: 5/16/1961 Well Elevation (ft): 829 Total Depth Formation: Devonian-3rd Corniferous Deepest Pay Formation: Devonian-"Corniferous" Deviated or Vertical: vertical