Wells – Packers or plugs – With expanding anchor
Patent
1987-04-26
1989-01-17
Novosad, Stephen J.
Wells
Packers or plugs
With expanding anchor
166192, 166196, 166387, 2771164, E21B 33128
Patent
active
RE0328316
ABSTRACT:
A method and apparatus for sealing a well casing, when a length of production tubing is disposed within the well casing, utilizes a sealing means having a first diameter less than the diameter of the production tubing, and the sealing means is compressible to a second diameter which sealingly conforms to the diameter of the well casing, to prevent fluids disposed in the well casing below the sealing means from flowing through the well casing to above the sealing means.
To support the sealing means when it has been sealingly conformed to the diameter of the well casing, the well bore apparatus of the invention further includes upper and lower sets of opposed reinforcing members which are mounted on the body of the well bore apparatus above and below the sealing means and operatively arranged to be respectively swung outwardly from the body to an extended position for supporting the upper and lower end portions of the sealing means against longitudinal movement in the well casing.
REFERENCES:
patent: 3067819 (1962-12-01), Gore
patent: 3381969 (1968-05-01), Crow
patent: 3463228 (1969-08-01), Hearn
patent: 3529836 (1970-09-01), Hyde
patent: 3578078 (1971-05-01), Schillander
patent: 3706342 (1972-12-01), Woolley
patent: 4050517 (1977-09-01), Matthews
Hoppe Joachim A.
Shonrock Clinton O.
Wambaugh John O.
Garrana Henry N.
Melius Terry Lee
Novosad Stephen J.
Schlumberger Technology Corporation
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