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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

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.

대표청구항

A plug assembly for selective blocking of a flowbore, the plug assembly comprising: a. a plug member substantially comprised of materials which are dissolvable in fluid; and b. a port which may be selectively opened to provide fluid access to the plug member.

A plug assembly for selective blocking of a flowbore, the plug assembly comprising: a. a plug member substantially comprised of materials which are dissolvable in fluid; and b. a port which may be selectively opened to provide fluid access to the plug member.