Wells – Guide for device or conduit – On sucker or pump rod
Patent
1992-03-12
1993-09-28
Dang, Hoang C.
Wells
Guide for device or conduit
On sucker or pump rod
1662414, E21B 1710
Patent
active
052479900
ABSTRACT:
A centralizer for downhole sucker rods such as those used in oil wells. The centralizer has a central axial aperture for rotatable mounting on a downhole rod of a rod string. The exterior surface of the centralizer is shaped to engage the well wall when brought into contact with the wall such that rotational movement of the centralizer is limited or stopped with respect to the wall. Generally, the exterior of the centralizer is shaped to match the shape of the wall of the well in which it is to be used. A centralizer for use with a well lined with a circular tubing thus has at least one exterior surface which in cross section defines an arc having a radius of curvature equal to that of the tubing interior. A disclosed embodiment has six lobes having surfaces defining in cross section portions of three such arcs arranged symmetrically about the central aperture.
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Nguyen Dzung
Sudol Tad A.
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