METHOD FOR ITERATIVE INVERSION OF DATA FROM COMPOSITE SOURCES
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United States of America Patent
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Issued Date -
Jun 30, 2016
app pub date -
Apr 13, 2015
filing date -
Apr 14, 2014
priority date (Note) -
Abandoned
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Abstract
Iterative inversion of composite source data obtains recorded seismic data at a plurality of receivers from a plurality of sources. A selected orthogonal function is applied to a set of sources selected from the plurality of sources to identify candidate sources in the set of sources to receive a time shift. A time shift is applied only to the candidate sources, and all sources in the set of sources are combined into a composite source. A current earth model performs forward modeling for the composite source to generate a synthetic seismic data set. A composite recorded seismic data set associated with the set of sources at the receivers is determined and is used with the synthetic seismic data set to determine a residual seismic data set. The current earth model performs a gradient update that is used to update the current earth model and generate an updated earth model.
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