دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a device with an elastomer packing element that depends on pressure below the packing to effect a seal in the annulus. Used primarily to run or pull pipe under low or mederate pressures, this device is not dependable for high differential pressures. Also called a stripper.

a seal between or around equipment to isolate pressure or areas within the well. .