Wellbore casing mounted device for determination of fracture geometry and method for using same
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United States of America Patent
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Jan 15, 2013
Grant Date -
Mar 18, 2010
app pub date -
Sep 12, 2007
filing date -
Sep 12, 2007
priority date (Note) -
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Abstract
A logging system and method for measuring propped fractures and down-hole subterranean formation conditions including: a radar source; an optical source; an optical modulator for modulating an optical signal from the optical source according to a signal from the radar source; a photodiode for converting the modulated optical signal output from the optical modulator to the source radar signal. A transmitter and receiver unit receives the source radar signal from the photodiode and transmits the source radar signal via at least one antenna attached to the casing and in communication with at least one photodiode into the formation and receives a reflected radar signal. A mixer mixes the reflected radar signal with the source radar signal to provide an output. This can describe fractures connected to the wellbore and differentiate between the dimensions of the two vertical wings of a propped fracture.
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