Straddle packer and method for using the same in a well bore

Details Straddle packer and method for using the same in a well bore Straddle packer and method for using the same in a well bore

2004-07-01

2010-11-30

Stephenson, Daniel P (Department: 3676)

Wells

Packers or plugs

Spaced sealing portions

C166S121000, C166S127000, C166S177500, C166S308100, C166S387000

Reexamination Certificate

active

07841397

ABSTRACT:
A tool for use in the treatment of a formation penetrated by a well bore. The tool comprises a tubular core having at least one opening therein for the discharge of pressurized fluid from within the core, first and second axially spaced apart seals disposed on the core for seals between the core and the well bore, the opening in the core being located between the first and second seals, and a third seal disposed downhole relative to the first and second seals for sealing between the tool and the well bore, the third seal protecting the first and second seals from pressure in the well bore below the tool.

REFERENCES:
patent: 2554005 (1951-05-01), Bodine, Jr.
patent: 3659648 (1972-05-01), Cobbs
patent: 4192375 (1980-03-01), Maly et al.
patent: 4714117 (1987-12-01), Dech
patent: 5343956 (1994-09-01), Coronado
patent: 5894888 (1999-04-01), Wiemers et al.
patent: 6655461 (2003-12-01), Eslinger et al.
patent: 2004/0084187 (2004-05-01), Costley et al.

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