No well shall be drilled within the city limits without properly setting surface casing to a minimum depth of 2,000 feet. No well shall be drilled within the city limits without cementing the surface casing by the pump and plug method with sufficient cement to completely fill all of the annular space behind the casing to the surface of the ground; and without cementing the production string by the pump and plug method with sufficient cement to completely fill all the annular space behind the production string to at least 600 feet above the highest oil and/or gas bearing horizon; and in the event a protection string of casing is used, without cementing the protection string by the pump and plug method with sufficient cement to completely fill all the annular space behind the protection string to at least 600 feet above the highest oil and/or gas bearing horizon.
(Ord. 59-311, passed 3-11-1959) Penalty, see § 113.99