Method and apparatus for in-situ wellbore measurements
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United States of America Patent
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Apr 8, 2014
Grant Date -
Feb 2, 2012
app pub date -
Jan 7, 2010
filing date -
Jan 12, 2009
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Abstract
An apparatus and method to monitor parameters outside the wellbore casing of a well includes a Wireless Sensor Unit located outside a section of a non-magnetic casing of the well. The Wireless Sensor Unit includes a sensor device to measure parameters of the surroundings. The apparatus further includes an internal Sensor Energizer Unit inside the wellbore casing used for power and communication with the Wireless Sensor Unit. The Sensor Energizer Unit and the Wireless Sensor Unit are arranged to be at the same elevation, and they communicate data using electromagnetic modulation techniques.
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