Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Giancarlo Tomasso Pietro Pia0
Date of Patent
April 17, 2007
0Patent Application Number
102962950
Date Filed
October 17, 2001
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A method of isolating a reservoir of production fluid in a formation comprises providing a pair of valves (14, 16) in a bore intersecting a production formation and in which the hydrostatic pressuer in the bore at the formation is normally lower than the formation pressure, and then ontrolling the valves (14, 16) from surface such that the valves (14, 16) will only move from a closed configuration to an open configuration on experiencing a predetermined differential pressure across the valves.
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