دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the high-velocity ejection of a stream of drilling fluid ". from the nozzles of a jet bit to remove rock encountered during drilling. Sometimes sand or steel shot is added to the drilling fluid to increase its erosive capabilities.

n: drilling adopting flowing fluid with high speed from the spray head of the jet bit eroding the rock in the bottom