深度域子波分析及褶积研究  

Depth domain wavelet analysis and convolution studies.

作　　者：胡中平[1] 林伯香[1] 薛诗桂[1] 

机构地区：[1]中石化石油勘探开发研究院南京石油物探研究所,江苏省南京市卫岗21号210014

出　　处：《石油地球物理勘探》2009年第A01期29-33,共5页Oil Geophysical Prospecting

基　　金：中国石化集团公司重点科技项目"深度域叠前地震属性技术探索研究"(P03071)

摘　　要：本文首先分析了均匀介质中时间域和深度域地震子波的表达式及特性,随后深入探讨了层状介质中深度域子波的特性,在分析深度域地震子波褶积存在的主要问题的基础上,根据基本的褶积定理,提出了采用速度替换方法完成深度域褶积。理论分析及实际测井数据处理结果表明:该方法理论可行,实际处理方便,由于可以直接从高精度的深度成像结果中提取子波,所生成的合成地震记录可直接与深度域地震记录进行对比,因而具有较高的精度和计算效率。In this paper the expression formulas and characteristics of the seismic wavelet in depth domain in homogeneous media were analyzed, then the characteristics of the seismic wavelet in depth domain in layered media were thoroughly discussed. According to basic convolution principals and based on some main problems which occurs when analyzing seismic wavelet convolution in depth domain, it is suggested in this paper that the velocity replacement method can be used to conduct convolution in depth domain. The theoretical analysis and real data testing show that the method is feasible, it is easy to use, and it is an effective and efficient method as the wavelet was extracted from accurate imaging results in depth domain and the generated synthetic seismogram could be directly correlated with seismic records in depth domain.

关 键 词：叠前深度成像 深度域 子波 测井数据速度 合成记录 

分 类 号：P631.84[天文地球—地质矿产勘探] O357.5[天文地球—地质学]