دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a cable on a pumping unit, looped over the horsehead and connected to the carrier bar to support the polished rod clamp. See sucker rod pumping.

n: yoke or clamp fastened to a pumping wells polished rod and to which the bridle of the pumping units horsehead is attached.

n: a mechanical device used to hold an object in place. For example, a leak-repair clamp, or saddle clamp, holds a piece of metal with the same curvature as the pipe over a hole in a line, effecting a temporary seal. A wireline clamp holds the end of a wire rope against the main rope, while a polishedrod clamp attaches the top of the polished rod to the bridle of a pumping unit

n: 1. an instrument or assembly of instruments used to measure torque and other force-related properties of rotating or reciprocating machinery. 2. in sucker rod pumping, a device used to indicate a variation in load on the polished rod as the rod string reciprocates. A continuous record of the result of forces acting along the axis of the polished rod is provided on a dynamometer card, from which an analysis is made of the performance of the well pumping equipment.

a recording of the stresses in a rod string of a beam pumping unit.

n: a continuous record made by the dynamometer of the result of forces acting along the axis of the polished rod in sucker rod pumping.

rod load n: the lowest load imposed on the polished rod throughout a complete sucker rod pump cycle.

n: the topmost portion of a string of sucker rods. It is used for lifting fluid by the rod-pumping method. It has a uniform diameter and is smoothly polished to seal pressure effectively in the stuffing box attached to the top of the well.

a surface rod pup joint that slides through the stuffing box on a beam pumped well. The part is highly polished and generally chrome plated. It must not be exposed to HCl acid.

n: fastening device for connecting the polished rod to the bridle of a beam pumping unit.

a device that fastens the polished rod to the bridle.

n: a device that indicates the variation in load on the polished rod as the rod string reciprocates. A continuous record of the result of forces acting along the axis of the polished rod is provided 00 a dynamometer card, from which the perfor- mance of the well-pumping equipment is analyzed.