Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Offshore prospecting
Patent
1995-04-07
1998-06-30
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Offshore prospecting
364421, 362 49, G01V 138
Patent
active
057744165
ABSTRACT:
In ocean bottom seismic exploration, it is common for co-located hydrophones and geophones to be deployed on the ocean bottom. One problem encountered is the water column reverberation. An improved method and device is proposed for attenuating water column reverberations using co-located hydrophones and geophones in ocean bottom seismic processing. In this method, each recorded hydrophone and geophone signal, or trace, is decomposed into a series of narrow band-pass filtered traces. For each of the filtered traces, a measurement of the energy level is made upon which normalization factors are computed and applied. The resulting filtered, normalized traces are summed. Optionally, prior to application, the normalization factors can be organized by common shot, common group, common offset, and surface consistent normalization factors derived and applied for each pass-band.
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Cafarelli Bill
Kinkead Jack
Sadek Selwa
Sanders Joe
Arnold Gordon T.
Moskowitz Nelson
PGS Tensor Inc.
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