High temperature packer for well conduits

Details High temperature packer for well conduits High temperature packer for well conduits

1987-06-22

1988-03-15

Novosad, Stephen J.

Wells

Packers or plugs

With expanding anchor

166182, 166203, E21B 33129

Patent

active

047306700

ABSTRACT:
A packer for effecting steam treatment of a production formation of a subterranean well comprises an insulated mandrel which is slidably inserted within the bore of an inner tubular body assembly. An outer operative tubular assembly surrounds the inner assembly and mounts a plurality of drag blocks, upper and lower cone elements, a plurality of radially displaceable slips cooperating with the upper and lower cone elements, and an outer packing element fabricated by an assemblage of high temperature resistant, non-resilient seal elements formed primarily of graphite. An inner packing element is provided in the inner tubular body assembly utilizing additional high temperature resistant, non-resilient seal elements formed primarily of graphite, which sealingly engages the insulated mandrel.

REFERENCES:
patent: Re31933 (1985-07-01), Taylor et al.
patent: Re31978 (1985-09-01), McStravick
patent: 4307781 (1981-12-01), Preston, Jr. et al.
patent: 4423778 (1984-01-01), Goldsmith
patent: 4548265 (1985-10-01), Luke

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