دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a percussion tool run on a fishing string to jar downward or upward on a stuck fish to knock it free. The bumper sub body moves up and down on a mandrel.

n: A drilling tool consisting of a short stroke slip joint that allows a more constant WOB when drilling from a floating rig.

n: A telescoping joint at the surface in floating offshore operations that permits vessel heave (vertical motion) while maintaining a riser pipe to the seafloor. As the vessel heaves, the slip joint telescopes in or out by the same amount so that the riser b

n: see telescoping joint.

n: A kind of equipment of riser system of offshore floating platform,usually be used to compensate the vertical movement of platform caused by stormy waves.





a tubular joint that allows tubing movement.