Okla. Stat. tit. 52, § 52-307: Drilling of wells through workable seams - Regulations

Any well drilled for oil, gas, salt water disposal or any other

purpose in connection with the production of oil and gas, through a

workable vein or seam of coal shall be drilled in such manner as

will, if practicable, exclude all oil, gas or gas pressure from the

coal seam, except such as is found in the coal seam itself. Each

string of casing that is run through a workable coal seam shall be

seated at least thirty (30) feet below the coal seam in twenty (20)

feet of cement, to form an effective seal, or the coal seam shall be

protected in such other manner as may be approved by the Corporation

Commission of the State of Oklahoma.

Added by 1955, p. 255, § 3.