Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Boris Timoffee0
Paul John Feluch0
Date of Patent
October 25, 2005
0Patent Application Number
104352620
Date Filed
May 12, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
The invention provides a downhole shut-in tool for obtaining formation pressure data. The tool includes a fast-closing main valve and a pressure-relief valve operable between open and closed positions to effect periodic sealing and release of formation pressure with respect to the surface.
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