Wells – Processes – Graveling or filter forming
Reexamination Certificate
2006-09-12
2006-09-12
Bagnell, David (Department: 3672)
Wells
Processes
Graveling or filter forming
C166S285000, C166S311000, C166S381000, C166S386000, C166S051000, C166S055000, C166S192000, C166S227000
Reexamination Certificate
active
07104323
ABSTRACT:
An expandable device for use in tubulars. The device comprises an outer tubular having a series of slots therein, with the slots being arranged about the exterior of the outer tubular. The device further includes an inner tubular disposed within the outer tubular, and a setting tool for moving the outer tubular in a first direction in order to expand the outer tubular along the slots. In one preferred embodiment, the slots are arranged about the outer tubular in a spiral pattern. In yet another preferred embodiment, the slots are arranged about the outer tubular in a first spiral pattern and wherein the first spiral pattern extends to a second spiral pattern. The setting tool, in one embodiment, comprises an outer setting sleeve connected to the outer tubular and a mandrel being connected to the inner member, and wherein the outer setting sleeve causes a downward force against the outer tubular so that the outer tubular expands. A method of expanding a device within a tubular is also disclosed.
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patent: 3891034 (1975-06-01), Owen et al.
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Cook Robert Bradley
Walls Glenn Mitchel
Anthony Ted A.
Bagnell David
Domingue C. Dean
Smith Matthew J.
Waddell Robert L.
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