دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: an instrument near the drillers position on a drilling rig that shows both the weight of the drill stem that is hanging from the hook (hook load) and the weight that is placed on the bit by the drill collars (weight on bit).

a string weight measurement device that can report the weight on the string at any time.