Multiple stage cementer and casing inflation packer

Details Multiple stage cementer and casing inflation packer Multiple stage cementer and casing inflation packer

1980-07-15

1983-12-20

Leppink, James A.

Wells

Packers or plugs

With controllable passage between central chamber and space...

166187, 166289, F21B 3313

Patent

active

044211651

ABSTRACT:
A combination multiple stage cementing tool and casing inflation packer includes an inflatable packer having a packer mandrel and an inflatable packing element disposed about the mandrel. A cementing tool includes a cylindrical outer casing, a cementing port disposed through a side wall of the casing, and a sliding sleeve valve assembly for opening and closing the cementing port. The cylindrical outer casing of the cementing tool is permanently attached to the packer mandrel and has a maximum outer diameter at least as great as a maximum outer diameter of the inflatable packing element when the inflatable packing element is in an uninflated position.

REFERENCES:
patent: 3223160 (1965-12-01), Baker
patent: 3228473 (1966-01-01), Baker
patent: 3247905 (1966-08-01), Baker
patent: 3270814 (1966-09-01), Richardson et al.
patent: 3524503 (1970-08-01), Baker
patent: 3529665 (1970-09-01), Malone
patent: 3768556 (1973-10-01), Baker
patent: 3768562 (1973-10-01), Baker
patent: 3941190 (1976-03-01), Conover
patent: 3948322 (1976-04-01), Baker

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