基于格林函数的多次波预测方法  

Multiple Wave Prediction Method Based on Green Function

作　　者：徐强[1] XU Qiang(Geophysical R&D Institute,COSL,Tianjin 300451,China)

机构地区：[1]中海油田服务股份有限公司物探事业部研究院,天津300451

出　　处：《中国造船》2019年第4期155-160,共6页Shipbuilding of China

摘　　要：要在浅水海域地震资料中,预测与海底相关的多次波,关键在于如何得到海底的一次反射波。论文基于惠更斯原理,用格林函数重构海底多次波模型。首先计算各接收点经过海底反射到的当前接收点的格林函数,将接收到的波场与格林函数褶积,再用自适应减法从原始数据中减去多次波数据,从而完成浅水层相关多次波的衰减。使用多个模拟数据和实际数据进行了验证,显示可以较好地衰减浅水水层多次波。In this paper,characteristics of seismic data by seabed multiple waves in shallow water are analyzed.Principle and problems of surface related multiple elimination method are analyzed and discussed.The Green function is used to reconstruct the reflection of seafloor.The seafloor related multiples model is convoluted with the original seismic data,and then multiples are subtracted from the original data.The simulation is verified with actual field data,and good agreement has been achieved.

关 键 词：地震资料处理 多次波衰减 SRME 自由表面多次波 预测反褶积 

分 类 号：P315.3[天文地球—地震学]