摘要
本文首先细致分析了保幅偏移方程各项的物理含义;然后介绍了理论反射系数的计算以及近似表达式;通过简单模型的计算,对比了成像结果与理论反射系数间的关系;最后将单程波保幅偏移技术应用于中国南方A探区碳酸盐岩地震资料的处理,实际处理结果表明本文方法对碳酸盐岩区地震资料的深层能量进行了有效补偿,中、深层信息更加丰富,可为AVO异常测定提供高质量的CIP道集。
In this paper,we first fully analyze the meaning of each item in preserved amplitude equation,and then introduce the approximate calculation equation of the theoretic reflection coefficient.We compare the migration amplitude of the simple model with its ideal value.Finally this preserved amplitude pre-stack depth migration by one-way wave equation is used in processing dataset acquired in a carbonate rock area,South China.The results show that the energy in deep layers is properly compensated and much more information in middle and deep layers provides high quality CIP gathers for AVO analysis.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2011年第5期715-719,836+661,共5页
Oil Geophysical Prospecting
关键词
单程波方程
频率-空间域有限差分
保幅偏移
碳酸盐岩
反射系数
one-way equation,finite difference in frequency-space domain,preserved amplitude migration,carbonate rocks,reflectivity
