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

Clay County

Set a minimum of 200 feet in all areas. Protect through the Dakota formation where penetrated plus 20 feet into the underlying formation. The following options are open:

(a) set through the Dakota plus 20 feet into the underlying formation 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 base of the Dakota to the surface.

If (b) is used and the hole is dry, refer to (b), page 1. In all cases, set through all unconsolidated material plus 20 feet into the underlying formation.