Method for full-bandwidth source deghosting of marine seismic streamer data
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United States of America
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Oct 2, 2012
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app pub date -
Dec 7, 2009
filing date -
Dec 7, 2009
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Abstract
Seismic data recorded in a marine streamer are obtained, sorted as a common receiver gather. A complex Laplace frequency parameter is used to transform the seismic data from a space-time domain to a spectral domain. An iterative conjugate gradient scheme, using a physically-based preconditioner, is applied to the transformed seismic data, to provide a least squares solution to a normal set of equations for a source deghosting system of equations. The solution is inverse-transformed back to a space-time domain to provide source deghosted seismic data, which is useful for imaging the earth's subsurface.
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