Wells – Packers or plugs – Expanded by confined fluid from central chamber – pump or...
Patent
1997-09-27
2000-03-28
Bagnell, David
Wells
Packers or plugs
Expanded by confined fluid from central chamber, pump or...
277331, E21B 33127
Patent
active
060418583
ABSTRACT:
An expandable apparatus for sealing a space downhole in a wellbore. The apparatus has an expandable body having a hollow interior for defining an open flow path. A deformable material within the hollow body interior partially obstructs the flow path when the body is run into the wellbore, and the deformable material is displaceable to expand the body into the downhole space and to open the body flow path. Such material can be displaced with a setting tool or with mechanical movement of the body components. A second body section can be moved relative to a first body section to displace the deformable material from the body interior. The second body section can initially be discontinuous with the first body section to permit installation through narrow wellbore spaces and can be connected downhole to create a unitary body structure.
REFERENCES:
patent: 2781852 (1957-02-01), Rumble
patent: 2815817 (1957-12-01), Conrad
patent: 3578083 (1971-05-01), Anderson
patent: 3724550 (1973-04-01), Lanmon, II
patent: 5775429 (1998-07-01), Arizmendi et al.
Atkinson Alan J.
Bagnell David
Kang Chi H.
PES, Inc.
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