Slip gripping mechanism with automatic segment alignment

Details Slip gripping mechanism with automatic segment alignment Slip gripping mechanism with automatic segment alignment

1987-07-24

1988-06-14

Novosad, Stephen J.

Wells

Processes

Placing or shifting well part

166216, E21B 2300

Patent

active

047505630

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 spaced-apart fashion on the cylindrical conduit and have side edges adapted to 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. Selected ones of the slips and cone segments are tapered to index the slips and facilitate alignment within the slots as the slips are brought into contact with the cones during the setting operation.

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patent: 4440223 (1984-04-01), Akkerman
patent: 4496000 (1985-01-01), Weeks
patent: 4598774 (1986-07-01), Nevels et al.

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