Fine coherent scanning method by seismic wave group feature
An Yong1,2,3
1. State Key Lab of Petroleum Resource and Survey,China University of Petroleum,Changping District,Beijing City,102249,China;
2. CNPC Key Lab of Geophysical Prospecting,China University of Petroleum,Changping District,Beijing City,102249,China;
3. College of Resource and Information,China University of Petroleum,Changping District,Beijing City,102249,China
Abstract：In order to improve the noise-suppressed precision by conventional dip-scanning coherence algorithm,the paper presented a fine dip-scanning coherence algorithm by seismic wave group feature that combines dip scanning with seismic wave group feature,which carried out coherent scanning of each wave group by using variable window length in scanning,using weighted mean method to realize effective signal pickup and taking the dip direction relative to the peak of wave group as the direction of the whole wave group to improve the issue of large computational effort in conventional dip-scanning coherence algorithm. The theoretical model and practical data processing showed that the method is able to effectively eliminate random noise and is an effective method of seismic data processing with low S/N ratio in complex area.
