Attachment device for a slip gripping mechanism with floating co

Details Attachment device for a slip gripping mechanism with floating co Attachment device for a slip gripping mechanism with floating co

1987-07-24

1988-03-22

Novosad, Stephen J.

Wells

Expansible anchor or casing

With wedge or cam and friction drag

166217, 166382, E21B 2300

Patent

active

047322128

ABSTRACT:
A slip gripping mechanism is shown for supporting a string of cylindrical conduit within the interior bore of a circumscribing well conduit. A cone retaining ring engages a plurality of floating cone segments which define spaced longitudinal slots on the outside of the cylindrical conduit. Vertically shiftable slips are carried in the slots by side edges which engage mating profiles formed in the slots. The slots form guideways for the slips for shifting the slips upwardly and outwardly between a set position engaging the circumscribing conduit and an unset position. The cone retaining ring is internally threaded and engages a mating externally threaded surface on the cylindrical conduit to fix the cone segments and prevent axial movement with respect to the cylindrical conduit.

REFERENCES:
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patent: 2751017 (1956-06-01), Baker et al.
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patent: 2879851 (1959-03-01), Wilson et al.
patent: 3013610 (1961-12-01), Conrad
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patent: 3528500 (1970-09-01), Brown
patent: 4311196 (1982-01-01), Beall et al.
patent: 4437517 (1984-03-01), Bianchi et al.
patent: 4440223 (1984-04-01), Akkerman
patent: 4496000 (1985-01-01), Weeks
patent: 4598774 (1986-07-01), Nevels et al.

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