دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a device used to connect long lines of pipe to allow the pipe joints to expand or contract as the temperature rises or falls.

n: the nipple tubular tools connected between the cementing pipe and left-handed ring joint and used to decrease the stress
ocurrs when breakout the cycling joint and be convenient for pulling out the cenment pipe


a device in a length of pipe that allows some pipe length expansion or contraction.

n: A kind of safety relief expansion joint ,which be used to decrease the vibration.



a mechanical dampener above a perforating gun that attenuates some of the acceleration force created by firing the gun.