دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the small wirelineoperated overshot designed to latch onto a spear point rope socket so that the wireline below the socket can be retrieved.

n: a governor that provides a decrease in prime mover speed for any increase in load or an increase in prime mover speed for any decrease in load.

n: a set of gears installed between a prime mover and the equipment it drives to reduce the running speed. For example, on a beam pumping unit, the engine may run at a speed of 600 revolutions per minute, rot the pumping unit it drives may need to operate at 20 strokes per minute. The speed reducer makes it possible to obtain the correct pump speed.

n: a small spring inside an engine governor that counteracts the force of flyweights in the governor. The speeder spring moves down on a sleeve in the governor to increase the fuel supply to the engine, at the same time, the flyweights move the sleeve up to decrease the fuel supply. Since the flyweights spin at a speed determined by the engines speed. if engine speed drops, the speeder spring moves down to speed the engine up. Seeftyweight, governor.

n: see recoverable gas lift gas.

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 helically shaped gripping mechanism that is fined into an overshot to retrieve fish from the borehole. See grapple.

a linear explosive cutter that is designed the cut linearly through the pin and box connection during pipe recovery.

n: an absorbent for recovering vapors of a lighter absorbent that is used in the main absorption process of a gas processing plant.

n: a unit wherein the vapors of lighter absorption oils are recovered.