Wells – Guide for device or conduit – On sucker or pump rod
Patent
1990-04-06
1991-03-05
Kisliuk, Bruce M.
Wells
Guide for device or conduit
On sucker or pump rod
175325, E21B 1710
Patent
active
049970399
ABSTRACT:
A centralizer for a pump rod string which minimizes the resistance offered thereby to flow of well fluids therepast having a body provided with two pairs of longitudinally and circumferentially spaced radially outwardly extending ribs and a circumferential area of reduced external diameter between the two pairs of ribs providing a circumferential line of reduced mechanical strength to minimize likelihood of occurrence of longitudinal cracks in the body of the centralizer and minimizing flaking of the body when the body is subjected to strains and stresses due to bending of the rod, on which it is rigidly mounted, about axes substantially perpendiculer to the longitudinal axis of the rod and also providing flow passages of increased area between the two pairs of ribs.
REFERENCES:
patent: 2659439 (1953-11-01), Baker
patent: 3250578 (1966-05-01), Lubbes
patent: 3484141 (1969-12-01), Collett
patent: 3916998 (1975-11-01), Bass, Jr. et al.
patent: 4600063 (1986-07-01), Beasley
patent: 4809777 (1989-03-01), Sable
Kisliuk Bruce M.
McClung-Sable Partnership
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