Minimum Surface Casing Requirements

Minimum surface casing requirements for protecting fresh and usable water and to meet alternate #1 on Intent to Drill cards, Form C-1
S=Section, T=Township, R=Range

Grant County

In all areas protect 20 feet into the Permian. The following options are open: (a) set 20 feet into the Permian or (b) set through all unconsolidated material plus 20 feet into the underlying formation and cement the production string from a point 20 feet below the top of the uppermost Permian unit present to the surface. If (b) is used and the hole is dry, the hole shall be filled with cement from a point 20 feet below the top of the uppermost Permian unit present to the surface. In all cases, set through all unconsolidated material plus 20 feet into the underlying formation.