Retrievable bridge plug

Details Retrievable bridge plug Retrievable bridge plug

1981-11-09

1984-01-24

Novosad, Stephen J.

Wells

Packers or plugs

With expanding anchor

166137, 166139, 166237, E21B 33134

Patent

active

044270631

ABSTRACT:
A retrievable bridge plug of the type having upper and lower anchors and an elastomeric packer for sealing a well casing. Drill string manipulation of the plug body effects packer compression and sealing. A ratchet maintains packer compression when engaged and permits packer expansion when disengaged. A cam surface on the plug body engages and disengages the ratchet responsive to longitudinal movement of the plug body.

REFERENCES:
patent: 3011558 (1961-12-01), Conrad
patent: 3142338 (1964-07-01), Brown
patent: 3282342 (1966-11-01), Mott
patent: 3289766 (1966-12-01), Bigelow
patent: 3364997 (1968-01-01), Current
patent: 3419079 (1968-12-01), Current
patent: 3422900 (1969-01-01), Hyde et al.
patent: 3456723 (1969-07-01), Current et al.
patent: 3470951 (1969-10-01), McGill
patent: 3495659 (1970-02-01), McGill
patent: 3502144 (1970-03-01), Young
patent: 3508610 (1970-04-01), Kisling
patent: 4156460 (1979-05-01), Crowe
Baker "Universal Type" Packer, Dec. 1950 Petroleum Engineers.

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