Wells – Guide for device or conduit – On sucker or pump rod
Patent
1987-09-21
1988-12-27
Kisliuk, Bruce M.
Wells
Guide for device or conduit
On sucker or pump rod
175325, E21B 1710
Patent
active
047934123
ABSTRACT:
The present invention relates to a device which can be used to centralize a polished bar and/or a piston stem of a subsurface pump within a production pipe. The device comprises an elongate, substantially cylindrical body member having a longitudinal axis of symmetry, a plurality of slots in the member, and a plurality of rotatable members eccentrically mounted in the slots with respect to the longitudinal axis of symmetry for permitting simultaneous contact between the rotatable members and the inner wall of a tubular production pipe.
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patent: 4621690 (1986-11-01), Klyne
Newski Alejandro
Rivas Olegario
Intevep S.A.
Kisliuk Bruce M.
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