无反射波动方程正演模型及其应用  

Reflection free wave equation modeling and its application.

作　　者：吴清岭[1] 李伟[1] 陈可为[1] 崔敬伟[1] 

机构地区：[1]大庆石油管理局勘探开发研究院

出　　处：《石油地球物理勘探》2000年第2期147-153,共7页Oil Geophysical Prospecting

摘　　要：虽然利用全声波方程进行地震波场的数值模拟可以计算全声波波场值 ,但是也常常会出现层间多次波 ,给资料解释造成一定的困难。本文根据无反射声波方程 ,采用有限差分数值解法 ,实现了自激自收时间剖面的制作 ,避免了层间多次波的产生。本方法不但允许速度有纵向变化 ,而且允许速度有横向变化 ,这使得模拟复杂地质构造的地震响应成为可能。实际计算结果表明 ,该方法是一种行之有效的自激自收时间剖面的计算机数值模拟方法。Wave field numerical simulation using full acoustic wave equation brings the wave field values of full acoustic wave; however, it often incurs interbed multiple, which causes some troubles in seismic data interpretation. By using reflection free acoustic wave equation and finite difference numerical solution, zero offset time section may be produced to avoid interbed multiples. This method allows both vertical and lateral velocity variations and then makes it possible to model the seismic responses of complicated geological structure. Real computation results show that this method is very feasible in numerical modeling of zero offset time section.

关 键 词：无反射波动方程 数值模拟 地震勘探 地震波 

分 类 号：P631.443[天文地球—地质矿产勘探]