E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/12 (2006.01) E21B 23/06 (2006.01) E21B 29/00 (2006.01) E21B 33/128 (2006.01) E21B 43/08 (2006.01) E21B 43/10 (2006.01)
Patent
CA 2452798
The present invention generally relates to an apparatus and method for sealing a wellbore. In one aspect an apparatus for sealing a wellbore is provided. The apparatus includes a swelling elastomer disposed around an outer surface of the tubular body. The swelling elastomer is isolated from wellbore fluid in an annulus. However, upon the application of an outwardly directed force to an inner surface of the tubular body, the tubular body expands radially outward causing the swelling elastomer to contact the wellbore while exposing the swelling elastomer to an activating agent via the one or more apertures, thereby causing the swelling elastomer to create a pressure energized seal with one or more adjacent surfaces in the wellbore. In another aspect, a liner assembly for isolating a zone in a wellbore is provided. In yet another aspect, a method for sealing a wellbore is provided.
Harrall Simon J.
Whanger James K.
Deeth Williams Wall Llp
Weatherford/lamb Inc.
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