دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: see elevators.

n: The tool for suspending the casing when casing running.

n: A kind of high intensity elevator with long slips. Used to hoist heavy long casing for deep well.

n: a casing elevator containing segmented slips with gripping teeth inside. Slip elevators are recommended for long strings of casing, because the teeth grip the casing and help prevent casing damage from the weight of long, heavy strings hanging from the elevators. Slip elevators may also be used as slips.

n: The slip that can retain homogeneously the pipe.