Abstract：OBC dual-receiver is a new-developed exploration technique in the late eighties of last century,which is mainly used to suppress "water column reverberation" interference appeared between sea bottom and sea level that resulted in effectively improving S/N ratio of seismic data.The key of the method is to lower the OBC at sea bottom or a certain depth level under the sea,then the seismic data are simultaneously recorded by hydrophone and vertical velocity geophone at same survey point.Because the both geophones have opposite response to water column reverberation,the seismic data received by two kinds of geophone can be separately processed,the output results then are added and finally the records that both strengthen useful signal and eliminate water column reverberation can be reached.The technique has already become the criterion of OBC exploration.The technique has been imported in China in the late nineties but good results have not been achieved because of the limitation of processing techniques.On the basis of deeply studying the technique and in combining with practical data,the paper put forward a set of data processing ideas,in which the match of frequency in dual-receiver records is emphasized.The good results can be gained only in that way.
全海燕, 韩立强. 海底电缆双检接收技术压制水柱混响[J]. 石油地球物理勘探, 2005, 40(1): 7-12.
Quan Hai-yan, Han Li-qiang. Using OBC dual-receiver to suppress reverberation of water column. OGP, 2005, 40(1): 7-12.
