دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a device used with slips to prevent tubing from falling into the hole when a joint of pipe is being unscrewed and racked. tubing sub n: any type of sub used in the tubing string. See sub.

the holder for the slips on a rig. Suspends the tubing during connection make-up.