Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 18, 2009
Patent Application Number
10618419
Date Filed
July 11, 2003
Patent Primary Examiner
Patent abstract
A method of increasing the collapse resistance of a tubular comprises locating a tool having at least one, and typically three, bearing members within a tubular. The bearing members are positioned in engagement with a wall of the tubular to apply a radial force to a discrete zone of the wall. This radial force is then applied to further discrete zones of the wall, the level of radial force being selected such that the collapse resistance of the tubular is increased.
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