Wells – Packers or plugs – With expanding anchor
Patent
1990-08-13
1991-10-22
Novosad, Stephen J.
Wells
Packers or plugs
With expanding anchor
166148, 166386, 166387, E21B 2300, E21B 33125, E21B 3410
Patent
active
050586726
ABSTRACT:
An assembly for installation within the end of a joint of casing or liner for use in a downhole environment where the liner or casing is disposed in the borehole which traverses earth formations. The assembly includes an annular split ring expander and an annular split ring slip element and a self-energizing packing element which has an interference fit with respect to the bore of a string of pipe. A mechanically operated setting tool has a set of nut members on a threaded mandrel which are selectively operated for setting the slip element of the assembly into a wedging engagement with the expander in the wall of a well pipe and for releasing the setting tool from the body of the assembly to leave the assembly installed within the end of a joint of casing or liner. An expander nut is threadedly coupled to the end of the body of the assembly to lock the slip member in position and the bore of the body is conformed to receive a valve and a landing collar arrangement.
REFERENCES:
patent: 2228243 (1941-01-01), Baker
patent: 2331532 (1943-10-01), Bassinger
patent: 2754136 (1956-07-01), Phillips
patent: 2789925 (1974-02-01), Brown
patent: 2988148 (1961-06-01), Conrad et al.
patent: 3054450 (1962-09-01), Baker
patent: 3152643 (1964-10-01), Burns
patent: 3392784 (1968-07-01), Brown
patent: 3393743 (1968-07-01), Stanescu
patent: 3460617 (1969-08-01), Brown et al.
patent: 3631925 (1972-01-01), Nutter
Lindsey Completion Systems, Inc.
Novosad Stephen J.
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