Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 8, 2013
Patent Application Number
12425694
Date Filed
April 17, 2009
Patent Citations Received
Patent Primary Examiner
Patent abstract
An embodiment of a method for limiting the probability of failure on demand of a subsea test tree (“SSTT”) includes the steps of providing a safety shut-in system for actuating a safety valve of the SSTT, the safety shut-in system including a surface control station positioned above a water surface connected via an umbilical to a subsea control system positioned below the water surface to actuate the safety valve; and diagnostically testing the safety shut-in system without actuating the safety valve.
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