Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Offshore prospecting
Reexamination Certificate
2011-07-26
2011-07-26
Keith, Jack (Department: 3663)
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Offshore prospecting
C367S038000
Reexamination Certificate
active
07986586
ABSTRACT:
Seismic data are obtained for each seismic source activation in a marine streamer and for each frequency, after being transformed 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 deghosting system of equations. The solution is inverse-transformed back to a space-time domain to provide deghosted seismic data.
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Fokkema Jacob T.
van Borselen Roald G.
van den Berg Peter M.
Breier Krystine
Keith Jack
PGS Geophysical AS
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