Wells – Packers or plugs – With expanding anchor
Patent
1985-10-02
1987-02-03
Leppink, James A.
Wells
Packers or plugs
With expanding anchor
166147, 166186, E21B 33124
Patent
active
046403515
ABSTRACT:
A packer for a down hole oil well includes an inner mandrel assembly having an upper outer sleeve assembly that includes the hold down mechanism and upper packer seals with a piston on the underside of the packing seals to be pressure responsive and to deform the seals in response to pressure within the well string. Furthermore, a lower outer sleeve assembly has packing elements that are deformed and a setting mechanism to allow the packer to be set in a position within the well casing. Upper and lower unloading valves allow for fluid the bypass the packers when the packer is retrieved upward through the well casing.
REFERENCES:
patent: 2760580 (1956-08-01), Johnston
patent: 3645335 (1972-02-01), Current
patent: 4279306 (1981-07-01), Weitz
patent: 4289200 (1981-09-01), Fisher, Jr.
patent: 4519456 (1985-05-01), Cochran
Brookey Robert L.
Clifton Ted G.
Arrow Oil Tools Inc.
Leppink James A.
Melius Terry Lee
Permut Steven L.
Sutherland Malcolm L.
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