Tool centralizer guide having a J-groove release

Details Tool centralizer guide having a J-groove release Tool centralizer guide having a J-groove release

1977-05-11

1979-01-23

Purser, Ernest R.

Wells

Guide for device or conduit

On sucker or pump rod

175325, 166240, E21B 2300

Patent

active

041355776

ABSTRACT:
A centralizer apparatus for guiding, within a well bore, a tool having a radially outwardly extending member thereon includes a sleeve concentrically disposed about the tool. The sleeve has a downwardly opening, substantially J-shaped groove therein sized to receive the radially outwardly extending member on the tool about which the sleeve is disposed. The J-groove has a first, closed, axially-extending slot portion and a second, axially-extending slot portion opening at the downstring end of the sleeve. The first and second axially extending slot portions of the J-groove are spaced circumferentially apart and communicate through a substantially transverse slot portion. An outer protective jacket is provided about the sleeve. A centralizer guide depends from the lower end of the jacket to contact the walls of the bore and maintain the tool centrally with respect thereto.

REFERENCES:
patent: 1874673 (1932-08-01), Waters
patent: 2035637 (1936-03-01), Crickmer
patent: 2429910 (1947-10-01), Anderson et al.
patent: 3329209 (1967-07-01), Kisling
patent: 3386764 (1968-06-01), Evans

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