Oil or gas well record in the Kentucky Geological Survey data repository.Well Number: 4 Original Operator: MARCO OIL CO, INC Farm Name: MAYS, JOHN HEIRS Permit Date: 5/12/1981 Completion Date: 5/29/1981 Well Elevation (ft): 1000 Total Depth Formation: Silurian-Clinton Sh Deepest Pay Formation: Devonian-"Corniferous" Deviated or Vertical: vertical