Wells – Packers or plugs – Expanded by confined fluid from central chamber – pump or...
Reexamination Certificate
2008-09-09
2008-09-09
Andrish, Sean D (Department: 3672)
Wells
Packers or plugs
Expanded by confined fluid from central chamber, pump or...
C166S387000, C166S189000, C166S191000, C166S195000, C166S100000
Reexamination Certificate
active
11187204
ABSTRACT:
A packer device and methods of use for a packer within uncased wellbore to form a complete fluid seal. The packer device includes a central mandrel body that retains a plurality of nested, telescopic expanding elements that are moveable outwardly from the mandrel body. The mandrel body and expanding elements are surrounded by a load-distributing structure as well as a sealing element, which is typically comprised of elastomer. The packer device is hydraulically actuated to urge the expansion members radially outwardly against the load-distributing structure and the sealing element. Because there are a number of discrete expansion elements, the packer device is better able to create a fluid seal within an uncased borehole with surface irregularities.
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Andrish Sean D
Baker Hughes Incorporated
Hunter Shawn
LandOfFree
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