METHOD OF ANALYSING A SUBSURFACE REGION
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United States of America Patent
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Issued Date -
May 26, 2016
app pub date -
Nov 21, 2014
filing date -
Nov 21, 2014
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Abstract
A method of analysing a subsurface region. 4D seismic data is received from a subterranean reservoir that is being seismically evaluated. A first set of values representing a first attribute at a plurality of first coordinates within the subsurface region is obtained from the 4D seismic data. A second set of values representing a second attribute at a plurality of second coordinates within the subsurface region is also obtained from the 4D seismic data, wherein each of the plurality of second coordinates corresponds to a respective first coordinate. For each first coordinate, a measure of dependence is calculated and the calculated measure of dependence is used to detect changes in the reservoir over time.
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