دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

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 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.

n: the cylinder or liner in which the plunger of a sucker rod pump reciprocates. See sucker rod pump. working barrel.

the tube through which the plunger of a rod pump reciprocates.

reciprocate.

to move a pipe up and down. Usually done to help remove mud or cuttings during well cleanup or placement of cement.

n: a kind of special box coupling used in cement with casing and consist of outer barrel,reciprocate scale sleeve , joints and so on

n: see differential sticking.

n: A condition whereby the drillstring cannot be moved (rotated or reciprocated) along the axis of the wellbore. Differential sticking typically occurs when high-contact forces caused by low reservoir pressures, high wellbore pressures, or both, are exerted