Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
January 11, 2011
Patent Application Number
10905859
Date Filed
January 24, 2005
Patent Primary Examiner
Patent abstract
The present invention provides for a valve to allow injection of fluids into a well or other subterranean facility. The valve comprises a housing and a flow tube assembly disposed in the housing. A restrictor is joined with the flow tube to restrict flow through the flow tube. A seal element also is positioned to selectively prevent production or upward flow of fluids through the valve upon halting injection operations.
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