Sercel Inc.

Patrick Burger

Robert J Garotta

Seismic acquisition apparatus comprising a plurality of detectors (s , s , etc.) each constituted by one or more seismic sensors, combiner means which generate at least one seismic trace corresponding to a group of detectors by combining the signals output thereby, and memory means for storing the seismic traces generated in this way, the apparatus being characterized in that it includes seismic preprocessor means (&mgr;P , &mgr;P , etc.) for re-phasing the signals output by the detectors prior to the signals being combined and/or prior to accidental noise on said signals being eliminated.

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Nantes, France

Patrick Burger