Packer

Wells – Processes – Placing or shifting well part

Reexamination Certificate

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Details

C166S118000, C166S179000

Reexamination Certificate

active

07938192

ABSTRACT:
A packer that is usable with a well includes an anchor. The anchor includes at least one spirally extending ring, which is adapted to be selectively radially expanded to secure the packer to a casing string.

REFERENCES:
patent: 1407570 (1922-02-01), Peirce
patent: 2174076 (1939-09-01), Bowen
patent: 2670797 (1954-03-01), Armentrout
patent: 3529836 (1970-09-01), Hyde
patent: 7281588 (2007-10-01), Shampine
patent: 2006/0124304 (2006-06-01), Bloess et al.
patent: 2007/0039161 (2007-02-01), Garcia
patent: 2007/0089886 (2007-04-01), Orban

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