Methods and apparatus for generating deghosted seismic data
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United States of America Patent
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Jun 7, 2016
Grant Date -
Oct 31, 2013
app pub date -
Apr 27, 2012
filing date -
Apr 27, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
One embodiment relates to a method for deghosting seismic data from a marine seismic survey. The seismic data from the marine seismic survey is obtained, where the marine seismic survey was performed using multiple sub-sources towed at two or more different depths and fired at distinct time-delays. The seismic data is sorted into common receiver gathers, and the common receiver gathers are transformed from horizontal source coordinates to horizontal wavenumbers. For each selected frequency, a matrix operator is constructed, and an inversion procedure is applied to a system of equations based on the matrix operator to generate source-deghosted seismic data. Other embodiments, aspects and features are also disclosed.
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