Wells – Packers or plugs – With expanding anchor
Patent
1986-07-08
1987-11-24
Novosad, Stephen J.
Wells
Packers or plugs
With expanding anchor
166127, 166133, 166376, E21B 2300
Patent
active
047082020
ABSTRACT:
A downhole tool for controlling the flow of fluids through the well casing includes a tubular mandrel with a flow control valve therein. A radially expandable seal member encircles the mandrel and a sub-bottom defines an abutment member, attached to and movable with the mandrel, for engaging one side of the seal member. A bottom cone is positioned around the mandrel and on the opposite of the seal member from the sub-bottom. The cone has a sleeve extending therefrom positioned between the seal and the mandrel on which the seal member is carried. An upper cone is positioned around the mandrel with slips segments being positioned between the upper and bottom cones. An upper radially expandable seal member encircles the mandrel and its carried on a sleeve extending from the upper cone. A lock hub is positioned around the mandrel and on the side of the upper cone opposite the upper seal and slip segments. The hub is slideable on the mandrel toward the sub-bottom for forcing the cones to converge against the slip segments, causing the segments to ride up on the cones and move radially outwardly. Sequentially the expandable seals are compressed and expanded radially outwardly for engagement against the casing wall. To facilitate drillability, components of the tool are formed of a synthetic resin composite, specifically a polyamide material that is glass fiber filled at a level of a minimum of about 30% by weight, having an extremely high modulus of elasticity and having a heat deflection temperature of about 400.degree. F. fully loaded.
REFERENCES:
patent: 2205119 (1940-06-01), Hall et al.
patent: 3433301 (1969-03-01), McEver, Jr.
patent: 3695352 (1972-10-01), McGill
patent: 3861465 (1975-01-01), Mignotte
patent: 4151875 (1979-05-01), Sullaway
patent: 4153109 (1979-05-01), Szescila
patent: 4296806 (1981-10-01), Taylor et al.
patent: 4441552 (1984-04-01), Hamman
Harris Monty E.
Sukup Richard A.
Neuder William P.
Novosad Stephen J.
The Western Company of North America
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