دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the act of ensuring that a pipe ram preventer will not close on a drill pipe tool joint when the drill stem is stationary. A pup joint is made up in the drill string to Iengthen it sufficiently. v: to position the correct number of feet (or metres) or joints of pipe from the packer to the surface tree, or from the rig floor to the blowout preventer stack.

n: 1. a thickened fluid that displaces drilling mud because of the difference in viscosity and weight between the spacer and the mud. Besides carrying lost circulation materials, spacers may be weighted with various inert materials such as fly ash and barite. 2. member of a pipeline construction gang who is responsible for assuring that the exact distance between the beveled pipe ends for a welding process to be used on the joint is maintained. Spacers strike a wedge into the interface between the pipe bevels and then maneuver them to an exact, uniform distance around the entire circumference.

n: A viscous fluid used to aid removal of drilling fluids before a primary cementing operation. The spacer is prepared with specific fluid characteristics, such as viscosity and density, that are engineered to displace the drilling fluid while enabling place

n: tubing or pipe with a very small diameter.

n: a water-spray device installed in the tail pipe of an engines exhaust system to suppress or prevent small, very hot objects, such as carbon particles, from causing a fire near the engine.

n: The total outer surface of unit weight or unit volume .

n: The work of fracturing unit volume rock

n: density times the attraction of gravity.

the weight of a volume per unit of volume.

n: A facility that can adjust valve automatically according to the density of drilling fluid.

n: 1. a neoprene ball that is run in a pipeline to clean it, to displace liquid hydrocarbons from natural gas pipelines, or to separate batches in liquid shipment. 2. a ball made of neoprene or other material that is put into a pipe prover to activate switches on the prover so that a known volume of petroleum or product is measured.

n: a separator that is a round, ball-shaped vessel.