SEISMIC ACQUISITION METHOD AT SEA BOTTOM, GUIDE EQUIPMENT, SEISMIC ACQUISITION ASSEMBLY AND SEISMIC ACQUISITION PLANT FOR IMPLEMENTING SAID METHOD

摘要

The invention relates to a method of acquiring seismic data in a plurality of positions distributed over an area of the seabed. The method according to the invention comprises the following steps: - acoustic waves are emitted in the water slice above said zone, by means of a plurality of sources, for each of said acquisition positions, a seismic acquisition assembly is released from the surface, said assembly comprising a seismic acquisition unit and a device autonomous guidance adapted to receive during its descent the emissions of said sources, and its trajectory is controlled as a function of the received waves so as to convey said assembly to said position, - the seismic acquisition is carried out, - the raising of the sets of acquisition towards the surface, the surface acquisition sets are recovered.