ELECTRICAL ISOLATION OF SUBTERRANEAN CASING SECTION
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United States of America Patent
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Issued Date -
Oct 9, 2014
app pub date -
Oct 1, 2013
filing date -
Oct 1, 2012
priority date (Note) -
Abandoned
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Abstract
A method and apparatus for electrically-enhanced oil recovery from an oil-bearing subterranean formation are provided. An isolation opening extends around the circumference of a casing to provide a separation of the inflow section from an adjacent section of the casing. A portion of the oil-bearing formation disposed on the outside of the isolation opening is removed to form a void in the oil-bearing formation adjacent the isolation opening. A material having less electrical conductivity than the casing is inserted into the void and the isolation opening to form an insulative barrier.
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