دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the component in a blowout preventer that cuts. or shears, through drill pipe and forms a seal against well pressure. Shear rams are used in floating offshore drilling operations to provide a quick method of moving the rig away from the hole when there is no time to trip the drill stern out of the hole.

n: the component of the BOP stack (q.v.) that cuts through the drill pipe and forms aseal across the wellbore. These are used on floaters when the rig must be moved off location in an emergency.

a ram in the BOP that shears off the pipe.