دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a pump barrel used for either tubing pumps or rod (insert) pumps. A fullcylinder barrel consists of a steel jacket inside of which is a full-length tube of cast iron or special alloy. The inner surface of the barrel is polished to a mirror like finish to permit a fluid-tight seal between it and the plunger. In a sectional liner barrel, the tube placed inside the steel jacket consists of a series of sections placed end to end and held firmly in place by means of threaded collars on the ends of the steel jacket.

n: the downhole assembly used to lift fluid to the surface by the reciprocating action of the sucker rod string. Basic components are barrel, plunger, valves, and hold-down. Two types of sucker rod pumps are the tubing pump, in which the barrel is attached to the tubing, and the rod, or insert, pump, which is run into the well as a complete unit.

n: a sucker rod pump in which the barrel is attached to the tubing. See sucker rod pump.

a beam lift pump where the barrel of the pump is attached to the tubing.