دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a transport of gas by displacement against the flow on a single pipeline, so that the gas is redelivered upstream of its point of receipt.

n: an excavating machine fitted with a hinged arm to which is rigidly attacheda bucket that is drawn toward the machine in operation. The backhoe is used for excavating and for clearing blasted rock out of the ditch during ditching and pipe laying.

n: See support cloth.

v: to overcome the positive electrical potentials of anodic areas in cathodic protection systems.

n: The operation that joins the driving stem to pick up drill stem and circulate the drilling fluid when touch sticking

n: that part of the seashore that lies between high-tide and storm-flood level.

n: a cylindrical ring employed to back up (or assist) a sealing member against extrusion under temperature and pressure.

n pl: the tongs latched on the drill pipe joint hanging in the totary by the slips, used to keep the pipe from turning as the makeup or breakout tongs (the lead tongs) apply torque to make up or break out the tightened tool joint connection. Compare lead tongs.

n: A tong suspended in the derrick, normally on the drillers right, used to hold box end of the tool joint while the pin end is loosened and unscrewed. Also called a make-up tong, as it is moved to pin end to tighten the joint to the recommended torque after

n: any wrench used to hold a pipe or a blot to prevent its turning while another length of pipe or a nut is being screwed into or out of it.

v: to reverse the flow of fluid from a water injection well to get rid of sediment that has clogged the wellbore.

v: The verb form of backwashing.