دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a hydraulic tool used in conjunction with a jar and made up on the fishing string above the jar to increase the power of the jarring force.

n: the tool of jam release and prevent sticking that using the shocking foce to the tubing in the hole .



a hydraulic tool used in combination with a jar to increase the impact of the jar on the fish.