Surface Ranging Technique with a Surface Detector
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United States of America Patent
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Jan 12, 2017
app pub date -
Sep 24, 2014
filing date -
Sep 24, 2014
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Abstract
A system for electromagnetic wellbore surface ranging to determine the location of a second wellbore relative to a first wellbore utilizing i) a current source configured to directly inject electrical current into a conductive member disposed in each wellbore and ii) an electromagnetic senor positioned on the surface of a formation, the sensor configured to measure electromagnetic fields at the formation surface emanating from the conductive member within each wellbore.
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