Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
April 21, 2009
Patent Application Number
11007400
Date Filed
December 8, 2004
Patent Citations Received
Patent Primary Examiner
Patent abstract
Casing is scored but not penetrated in one embodiment of a method that allows access to the formation without perforating or section milling the casing. In the run in condition the casing is impervious, to allow cement to be pumped through it to seal the annular space between the casing and the wellbore. After the cement is delivered and displaced through a shoe, the casing is expanded in the regions where it was scored to create openings that go against the wellbore wall. In between the expanded sections the cemented casing offers isolation between adjacent formations.
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