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Patent Searching and Data


Title:
DOWNHOLE POLYMER PLUG AND LINER AND METHODS EMPLOYING SAME
Document Type and Number:
WIPO Patent Application WO2004092526
Kind Code:
A3
Abstract:
A method of sealing an inner surface of a wellbore, said method comprising the steps of: providing a member having a preselected shape with a diametrical dimension and an axial dimension, said member being constructed of a material in which stored energy may be imparted and subsequently recovered at least in pan; subjecting said member to forces causing a reduction in said diametrical dimension and an increase in said axial dimension while imparting stored energy in said member; lowering said member into the wellbore to a desired location; and subjecting said member to conditions in the wellbore at said desired location to cause at least partial release of said stored energy and allow said member to expand to sealingly engage the inner surface of the wellbore at the desired location. TH1863 FF ERM 21

Inventors:
ZHANG JANE QING (US)
CHANG BENJAMIN TAI AN (US)
Application Number:
PCT/US2004/010535
Publication Date:
December 23, 2004
Filing Date:
April 05, 2004
Export Citation:
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Assignee:
SHELL OIL CO (US)
SHELL CANADA LTD (CA)
ZHANG JANE QING (US)
CHANG BENJAMIN TAI AN (US)
International Classes:
E21B29/10; E21B33/12; E21B33/13; (IPC1-7): E21B33/12; E21B29/10; E21B33/13
Foreign References:
US20020096330A12002-07-25
US4339000A1982-07-13
US3613784A1971-10-19
US4936386A1990-06-26
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