دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the rise and fall of liquids in small-diameter tubes or tubelike spaces, caused by the combined action of surface tension (cohesion) and wetting (adhesion). See capillary pressure.

n: the small-diameter tube extending below the pump suction of a sucker rod pump, usually inside the mud anchor, as in a poor boy" gas anchor.

a tube from the intake of a pump that extends further into the liquid column of the well, to keep gas out of the pump.

n: an important part of the primary element of an orifice meter installation that must create a known flow pattern for the fluid as it reaches the plate. It is the straight upstream pipe of the same size between the orifice and nearest pipe fitting and the similar downstream pipe between the orifice and nearest pipe fitting.

a large diameter tube below the packer where a grab will deploy when the packer is being milled out.

n: the last layer small diameter tubes that lowers in well complection.

n: that part of an orifice meter installation that creates the pressure drop in the pipeline necessary for gas measurement;includes the meter tube, orifice plate, fitting, and the pressure taps.

n: in an orifice meter installation, a mechanism for holding the orifice plate in the pipeline. In a singlechamber fitting, the gas flow must be stopped and the meter tube depressured before the orifice plate can be removed. Compare dual-chamber fitting.

n pi: bundles of smalldiameter tubing tack-welded together in a concentric pattern and placed in the upstream section of an orifice-meter run for the purpose of reducing considerably the amount of straight pipe required upstream of the orifice. They eliminate swirls and crosscurrents set up by the pipe fittings and valves preceding the meter tube.

n: a hole radially drilled in the wall of the meter tube or fitting, the inside edge of which is flush and without any burrs.

n: (Ev) a mathematical expression that relates the velocity of the fluid flowing in the meter tube upstream from the orifice to the velocity of the fluid flowing through the orifice.