Wells – Processes – Cementing – plugging or consolidating
Patent
1995-11-22
1997-11-11
Neuder, William P.
Wells
Processes
Cementing, plugging or consolidating
166192, E21B 3313
Patent
active
056853726
ABSTRACT:
A method and apparatus for establishing and substantially destroying a fluid-type plug which is substantially dissolvable in fluid. A means for selectively opening a fluid port to the plug member is described which causes dissolution of the plug to occur. The plug member is maintained within a plug housing which also contains the fluid port. The plug housing is received within an annular sleeve which serves to seal the plug housing port against fluid intrusion into the plug housing port. The sleeve also contains an aperture which will become generally aligned with the plug housing port as the plug housing is axially separated from the annular sleeve. Axial separation of the plug housing and sleeve is accomplished by selectively pressurizing and depressurizing the flowbore containing the plug assembly to remove support for the plug housing.
REFERENCES:
patent: 3362476 (1968-01-01), Van Poollen
patent: 4186803 (1980-02-01), Mondshine
patent: 4374543 (1983-02-01), Richardson
patent: 4721159 (1988-01-01), Ohkochi et al.
patent: 5417285 (1995-05-01), Van Buskick et al.
patent: 5479986 (1996-01-01), Gano et al.
Halliburton Energy Service,s Inc.
Hunter Shawn
Imwalle William M.
Neuder William P.
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