Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 14, 2010
Patent Application Number
11788871
Date Filed
April 20, 2007
Patent Primary Examiner
Patent abstract
Systems, methods, and heaters for treating a subsurface formation are described herein. At least one system for electrically insulating an overburden portion of a heater wellbore is described. The system may include a heater wellbore located in a subsurface formation and an electrically insulating casing located in the overburden portion of the heater wellbore. The casing may include at least one non-ferromagnetic material such that ferromagnetic effects are inhibited in the casing.
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