Packer locking apparatus

Details Packer locking apparatus Packer locking apparatus

1990-02-05

1991-02-05

Novosad, Stephen J.

Wells

Packers or plugs

Central support has shoulders expanding sealing portion, or...

166138, 166206, 166240, 166387, E21B 2306, E21B 33128

Patent

active

049896725

ABSTRACT:
An apparatus for locking a packer against premature actuation in a well bore. The locking apparatus includes a sleeve attached to a lower end of the packer and spring biased locking members adjacent to the sleeve. When in a locked position, lugs on the locking members engage a groove in the sleeve and prevent longitudinal movement of a mandrel in the packer with respect to the packer elements. When the locking apparatus enters a liner in the well bore, the locking members are biased radially inwardly, disengaging the lugs from the groove, so that the packer mandrel may be actuated and the packer set.

REFERENCES:
patent: 2633918 (1953-04-01), Le Rouax
patent: 2871949 (1959-02-01), Baker
patent: 2886110 (1959-05-01), Baker
patent: 3398795 (1968-08-01), Elliston
patent: 3608632 (1971-09-01), Solum
patent: 4018274 (1977-04-01), Cochran
patent: 4131160 (1978-12-01), Cochran
patent: 4669539 (1987-06-01), Barrington
Halliburton Services Sales & Service Catalog No. 43, pp. 2563-2565, published in 1985.

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