US Patent 7793722 Non-ferromagnetic overburden casing
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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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US Patent 07793722 Non-ferromagnetic overburden casing US Patent 7793722 Non-ferromagnetic overburden casing
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Patent Number
0779372200
Patent Number
779372200
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Infobox
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Patent Jurisdiction
Patent Number
077937220
Date of Patent
September 14, 2010
0Patent Application Number
117888710
Date Filed
April 20, 2007
0Official Website
Patent Primary Examiner
Edits on 24 Sep, 2022
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Infobox
Is a
Patent Jurisdiction
Patent Number
077937220
Date of Patent
September 14, 2010
0Patent Application Number
117888710
Date Filed
April 20, 2007
0Official Website
Patent Primary Examiner
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US Patent 07793722 Non-ferromagnetic overburden casing
Infobox
Is a
Patent jurisdiction
Patent number
07793722
Date of patent
September 14, 2010
Patent application number
11788871
Date Filed
April 20, 2007
Patent primary examiner
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