Annular packer and insert

Details Annular packer and insert Annular packer and insert

1993-06-17

1994-11-08

Neuder, William P.

Wells

Above ground apparatus

With seal for reciprocating member

175195, 277 31, E21B 3303

Patent

active

053618327

ABSTRACT:
An annular packer (P) with an axial bore (21) includes an elastomer body (23) with inserts (22) partially embedded therein and spaced circumferentially about the axial bore (21). The inserts (22) each support an element (24') embedded in the elastomer body (23) which move into the axial packer bore (21) beyond the inserts when an external compressive force is applied to the elastomer body to reduce the diameter of the axial bore (21) and to provide support for and inhibit extrusion of the elastomer body (23) that is moved into the axial bore by the compressive force.

REFERENCES:
patent: 2731281 (1956-01-01), Knox
patent: 2904357 (1959-09-01), Knox
patent: 3587734 (1971-06-01), Shaffer
patent: 4098341 (1978-07-01), Lewis
patent: 4460149 (1984-07-01), Schaeper et al.
patent: 4602794 (1986-07-01), Schaeper et al.
patent: 4657263 (1987-04-01), Hynes et al.
patent: 5279365 (1994-01-01), Yenulis et al.

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