دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: (bbl) 1. a measure of volume for petroleum products in die United States. {A)e barrel is the equivalent of 42 US gallons or 0.15899 cubic meters (9,702 cubic inches). One cubic metre equals 6.2897 barrels. 2. the cylindrical part of a sucker rod pimp in whid1 the piston like plunger moves up and down. Operating as a piston inside a cylinder, the plunger and ~I create pressure energy to lift well fluid to the surface.

an oilfield measurement barrel is 42 US gallons or 5.615 ft3 or 6.28 barrels = 1 meters3. Note that reservoir barrels undergo shrinkage by the reservoir volume factor as gas escapes. Stock tank barrels are measured after gas escapes.

an artificial lift system, common to low pressure, lower rate oil wells, with a plunger type bottom hole pump operated from the surface by a rod string.

a larger plunger designed to lift fluids when flowing gas up casing without presence of tubing

n: The long bar for pushing core out of core barrel.

the trip time for a plunger from dropping to recovery.

n: a device used to pump liquids, usually at high pressures, with an action similar to that of a piston.

n: a reciprocating pump with two pistons or plungers and used extensively as a mud pump on drilling rigs.

n: A reciprocating positive displacement pump having two pistons that are double-acting. Used as the circulating pump on some older drilling rigs.

a type of pump with two, dual acting pistons.

n: the erratic impact of a pump plunger against a fluid when the pump is operating with a partial vacuum in the cylinder, with gas trapped in the cylinder, or with the well pump off.

or rod pound – a beam lift term where the pump is filled with gas from pump-off or too fast of an operating speed (rod speed).

n: I. a condition sometimes encountered in a pumping well when dissolved gas, released from solution during the upstroke of the plunger, appears as free gas between the valves. If the gas pressure is sufficient, the standing valve is locked shut, and no fluid enters the tubing. 2. a device fitted to the gauging hatch on a pressure tank that enables manual dipping and sampling without loss of vapour. 3. a condition that can occur when gas-cut mud is circulated by the mud pump. The gas breaks out of the mud, expands, and works against the operation of the piston and valves.

n: the low-pressure area of induction port in pump is filled with departed free gas，which will cause suck inproperly even cutout。