High pressure retrievable gravel packing apparatus

Details High pressure retrievable gravel packing apparatus High pressure retrievable gravel packing apparatus

1984-09-26

1986-09-16

Novosad, Stephen J.

Wells

Packers or plugs

With expanding anchor

166 51, 166120, 166138, 166196, 2771162, 277120, 277188A, 277230, E21B 33128, E21B 33129

Patent

active

046116583

ABSTRACT:
A retrievable well packer and gravel packing system employing a multi-component packing element system is disclosed. The packing element system is expandable under axial compression to seal the annulus between a production or treatment tubing string and the well casing. The packing element system includes outer elastically deformable anti-extrusion backup rings and a central primary seal. A resilient member conformable to the surrounding countour, such as wire mesh, is employed between the central primary seal and each backup ring to allow retraction of the backup rings for retrieval.

REFERENCES:
patent: 3398795 (1968-08-01), Elliston
patent: 3987854 (1976-10-01), Callihan et al.
patent: 4289200 (1981-09-01), Fisher, Jr.
patent: 4326588 (1982-04-01), McStravick
patent: 4487258 (1984-12-01), Jackson et al.
patent: 4505332 (1985-03-01), Mills et al.

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