Method for acquiring and processing marine seismic data to...

Details Method for acquiring and processing marine seismic data to... Method for acquiring and processing marine seismic data to...

G - Physics

01

V

G01V 1/28 (2006.01) G01V 1/26 (2006.01)

Patent

CA 2704348

A method for acquisition and processing of marine seismic signals to extract up-going and down-going wave-fields from a seismic energy source includes deploying at least two marine seismic energy sources at different depths in a body of water. These seismic energy sources are actuated with known time delays that are varied from shot record to shot record. Seismic signals from sources deployed at different depths are recorded simultaneously. Seismic energy corresponding to each of the sources is extracted from the recorded seismic signals. Up-going and down-going wave- fields are extracted from the sources deployed at different depths using the extracted seismic energy therefrom. A method includes the separated up-going and down-going wave-fields are propagated to a water surface or a common reference, the up- going or the down-going wave-field is 180 degree phase shifted, and the signals from these modified up-going and down-going wave-fields are summed.

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