Apparatus and method for wellbore isolation

Wells – Processes – Parallel string or multiple completion well

Reexamination Certificate

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Details

C166S050000, C166S133000, C166S188000

Reexamination Certificate

active

07353878

ABSTRACT:
An apparatus for isolating a selected leg of a wellbore from the remainder of the wellbore includes a packer positionable in the selected leg of the wellbore, a tube extending through the packer from an uphole side of the packer to a downhole side of the packer to permit a fluid flow communication to the selected leg of the wellbore past the packer and a valve positioned in the tube to control fluid flow through the tube. In a method for isolating a selected leg of a wellbore, the apparatus is positioned in the selected wellbore leg and the packer set to permit fluid flow communication past the apparatus only through the tube and the valve of the apparatus.

REFERENCES:
patent: 1785277 (1930-12-01), Mack
patent: 2352700 (1944-07-01), Ferris
patent: 3035639 (1962-05-01), Brown et al.
patent: 3333639 (1967-08-01), Page et al.
patent: 5325924 (1994-07-01), Bangert et al.
patent: 5454430 (1995-10-01), Kennedy et al.
patent: 5941307 (1999-08-01), Tubel
patent: 6079493 (2000-06-01), Longbottom et al.
patent: 6311776 (2001-11-01), Pringle et al.
patent: 6349772 (2002-02-01), Mullen et al.
patent: 6388577 (2002-05-01), Carstensen
patent: 2001/0009189 (2001-07-01), Brooks et al.
Information on RockSeal Open Hole Packers, these or similar packers believed to be publicly available in the US prior to Aug. 19, 2002.

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