Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
January 30, 2007
Patent Application Number
10813832
Date Filed
March 31, 2004
Patent Citations Received
Patent Primary Examiner
Patent abstract
A casing-engaging wellhead isolation and method of the tool protects wellheads from lifting pressures induced by high fluid pressures and high flow rates used to stimulate low pressure wells. A releasable packer assembly mounted to a bottom end of a mandrel of the tool grips the casing and transfers the lifting pressures directly to the casing. Well treatment safety is thereby significantly enhanced.
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