南海东部碳酸盐岩叠后地震数据匹配处理

A match processing of post-stack seismic data of carbonate rocks in the eastern South China Sea

南海东部区域碳酸盐岩叠后地震数据有28个年度采集的二维、三维数据,并且不同年度、同一年度不同批次处理的资料既存在能量差、时差,又存在频率差,难以均衡。提出了数据整体匹配处理的思路与步骤,针对研究区碳酸盐岩顶、底及基底等3个目的层,以三维测线为主对叠后地震数据的能量、频率、时差等进行了匹配处理,获得了较好的效果。这些处理方法及经验对我国海上大面积连片三维地震资料重处理有一定的参考意义。

There are lots of 2D and 3D post-stack seismic data of carbonate rocks in the eastern South China Sea,which were acquired in 28 years and quite different in energy,time and frequency due to their different acquisition years and processing batches,resulting in a difficulty in balancing these data.The idea and steps of overall match processing are proposed for these post-stack seismic data,and aiming at three target horizons,i.e.the carbonate top and base and the basin basement,the match processing of energy,frequency and time in the post-stack data is mainly conducted for the 3D sesmic lines,with better results being obtained.This processing method and experiences may be meaningful in providing references for reprocessing widespread and continuous 3D seismic data offshore China.