دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the angle created by drilling line between the drawworks drum and die fast sheave. The line is parallel to the sheave groove at only one point on the drum. As the rope moves from this point either way. the fleet angle is created. The fleet angle should be held to a minimum-less than 1.5 degrees for grooved drums.