Port valve isolation packer

Details Port valve isolation packer Port valve isolation packer

1978-09-13

1980-03-11

Leppink, James A.

Wells

Packers or plugs

With central conduit and fluid port to space outside

166240, 166334, 285 81, 285402, E21B 33122, F16L 3500

Patent

active

041923782

ABSTRACT:
A port valve isolation packer comprises an upper body, a slip joint port valve, a positioner mandrel, a spacer coupling and a lower body, all of which make up a tubular body of the isolation packer. Said tubular body has upper and lower packer assemblies and a closing positioner attached to its outer surface. An inner mandrel is concentrically disposed within said tubular body. The slip joint port valve includes a slip joint mandrel having a port disposed therein, and a slip joint sleeve having a radial bore therethrough. When said port valve is in a first closed position, said port is blocked by said slip joint sleeve. When said port valve is in a second open position, said port is aligned with the radial bore of the slip joint sleeve. The inner bore of the inner mandrel communicates with said port. A fluid bypass is provided through an annular cavity between the inner mandrel and the tubular body.

REFERENCES:
patent: 1874673 (1932-08-01), Waters
patent: 2122749 (1938-07-01), Morrisett
patent: 2736384 (1956-02-01), Potts
patent: 3169580 (1965-02-01), Bateman
patent: 3391743 (1968-07-01), Bateman
patent: 3396798 (1968-08-01), Burns et al.
patent: 4103741 (1978-08-01), Daigle

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