Abstract:In recent years,few progresses have been made in broadband seismic exploration technology in shallow water.Especially in shallow water area such as Bohai Sea,where the average water depth is not greater than 30m,broadband acquisition is difficult to be implemented,and only can be realized through conventional acquisition and broadband processing.Ghost and shallow water multiple are the two main factors which restrict the broadband processing of shallow water data.In this paper,an adaptive deghosting method in τ-p domain was proposed to solving the problem of fierce time-space variation of ghost waves in shallow water.An adaptive shallow water multiple suppression method in τ-p domain was proposed to solve the problem that seabed model of Bohai Sea is difficult to be established.The application results in real seismic data in Bohai Sea demonstrated that the two key techniques proposed in this paper can broaden the frequency bandwidth of seismic data effectively,so as to realize the broadband processing of conventional plane streamer data in Bohai Sea.
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