Patent ID: 9164189
Filing Date: 2015-10-20
Classification: G01V

Abstract:
1. A method for managing a multi-vessel seismic system comprising a first vessel, having a recording system and towing at least one streamer integrating seismic sensors, and a second vessel, comprising at least one seismic source performing shots, seismic data obtained by said seismic sensors being recorded by said recording system, the recorded seismic data being combined with shot data relating to said shots, to obtain combined data whose interpretation allows to obtain a seabed representation, wherein said method comprises: the second vessel sends to the first vessel, via a radio link, a plurality of series of shot predictions, said series being updated successively in time, each series comprising instants planned for the N next shots, with N≧2; for each shot, the second vessel activates the at least one seismic source according to said predictions and sends to the first vessel, via said radio link, shot data relating to said shot; the first vessel activates the recording system, in order to record seismic data, either non-continuously and according to a last received series of shot predictions, or continuously; if, by analyzing a received series of shot predictions, the first vessel detects that it has not received the shot data relating to at least one performed shot, then the first vessel sends a request to the second vessel and receives in response the missing shot data; for each performed shot and the related shot data, selecting seismic data as a function of said related shot data, and combining the selected seismic data with said related shot data in order to obtain said combined data.