دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

prep: over. The term usually relates conditions of fluid flow 00 me side of a piece of equipment to conditions on the opposite side (e.g., a pressure drop across a separator).

v: to join metals by utilising the arc created between the welding rod, which serves as an electrode, and a metal object. The arc is a discharge of electric current across an air gap. The high temperature generated by the arc melts both the electrode and the metal, which fuse.

the flow area generated by perforations across a zone of interest. Typical calculated perforation entrance hole areas are 1% to 6% of the pipe body. Used in pressure drop calculations.

a build-up of particles on the upstream side of a filter that improves the filter’s ability to remove particles from fluid (will also raise the differential pressure across the filter).

n: old-style tap with longitudinal grooves across the threads. See tap, taper tap.

n: A usual fishing tool for fishing tubular goods dropping in the wellbore. There are thread and coning in the inner surface.

another name for a tapered tap. Used to screw into boxed of connections.

n: (slang) any large fan installed on a drilling rig or production facility to move large quantities of air across the rig floor or other area.

n: Slang. Refers to the electric fan installed near drill rig, used to dispel mosquito in the workspace.

a welded connection using two pipe ends, cut straight across and welded together with minimum circumferential contact.

n: a device fitted to a proving tank to indicate the position of the liquid surface in relation to the reference mark corresponding to the nominal capacity of the proving tank, thus enabling the determination of the tanks liquid contents. capacity rating n: a rating equal to the maximum number of cubic feet of gas that will pass through a meter when the pressure differential across the meter equals a 0.5- inch water column and the flowing pressure is 0.25 psig.

a erosion resistant covering or main pipe that is used when tubing is set deeper than the perforations or on the long string across from the upper perforations in a side-by-side completion.

valve normally placed across the circulation point to allow isolation of the tubing strings or tubing/casing during production.