Inflatable packer inner bladder retention and seal

Details Inflatable packer inner bladder retention and seal Inflatable packer inner bladder retention and seal

1992-11-25

1995-02-21

Dang, Hoang C.

Wells

Packers or plugs

Expanded by confined fluid from central chamber, pump or...

277 34, E21B 33127

Patent

active

053907388

ABSTRACT:
Bladder retention for an inflatable packer includes a tubular base and a retainer member. Retainer teeth are provided on both the tubular base and the retainer member to retain the bladder against the axial loads of inflation. Separate sealing ribs are provided on at least one of the tubular base and retainer member which positively engage a portion of the bladder which is not subjected to longitudinal stresses due to its location outwardly of the retainer teeth. Additionally, an elastomeric o-ring seal is provided between the retainer member and the tubular base thereby blocking the application of pressure forces tending to disengage the elastomeric bladder from its retention assembly.

REFERENCES:
patent: 3035639 (1962-05-01), Brown et al.
patent: 3542127 (1970-11-01), Malone
patent: 3918520 (1975-11-01), Hutchinson
patent: 4003581 (1977-01-01), Hutchinson
patent: 4133386 (1979-01-01), Knox
patent: 4310161 (1982-01-01), Streich
patent: 4406461 (1983-09-01), McGill
patent: 4892144 (1990-01-01), Coone
patent: 5205567 (1993-04-01), Quinlan et al.

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