Wells – Packers or plugs – With expanding anchor
Patent
1980-11-07
1982-09-14
Novosad, Stephen J.
Wells
Packers or plugs
With expanding anchor
166125, 166128, 166137, 166215, 166334, E21B 2306, E21B 33129, E21B 3412
Patent
active
043490719
ABSTRACT:
A well tool assembly comprising a drillable cement retainer and setting tool includes a connection between a setting-tool mandrel and a retainer mandrel allowing for opening and closing of a cement valve in the retainer without disconnecting the setting tool from the retainer. A releasable locking mechanism in the connection keeps a tubular connector between the setting-tool mandrel and the retainer mandrel locked against sliding relative to one of the mandrels prior to deploying an upper slip set of the cement retainer. Additionally, a carrier in the setting tool includes radially resilient lugs connected between the setting-tool mandrel and a retaining sleeve for the upper slip set for sliding upwardly on the setting-tool mandrel to carry the sleeve into an upper position releasing the upper slip set for deployment. A set lock in the retainer holds the retainer mandrel against movement downwardly once the retainer is anchored in the well.
REFERENCES:
patent: 3306366 (1967-02-01), Muse
patent: 3387659 (1968-06-01), Current
patent: 3448806 (1969-06-01), Berryman et al.
patent: 3465821 (1969-09-01), Berryman
patent: 3915226 (1975-10-01), Savage
patent: 4253521 (1981-03-01), Savage
Dresser Industries Inc.
Hazelwood J. N.
Novosad Stephen J.
Peoples W. R.
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