Abstract
Drilling activity increased again in 1978 both in number of wells drilled and footage cut. Success rates remained about the same in Oklahoma but declined slightly in the Texas Panhandle. Deep exploratory drilling also increased with a success rate of 40%, and average depths per well increased to 5,187 ft for development wells and 7,245 ft for wildcat wells. Seven successful wells and 8 dry holes are considered especially significant.
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