دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the closing and sealing component on a blowout preventer. One of three typesblind, pipe, or shear-may be installed in several preventers mounted in a stack on top of the wellbore. Blind rams, when closed, form a seal on a hole that has no drill pipe in it;pipe rams, when closed, seal around the pipe;shear rams cut through drill pipe and then form a seal.

n: the closing assembly which packs the whole well or the annular space out of the drilling pipe and controls the blowout,usually consist of rubber wick,brake body ,cover plate and screws

one of the hydraulically actuated rams in a blow out preventer (blind, shear, pipe or slip).