论文详情

基于表层多次波的地震数据插值方法研究

石油物探

2013年 52卷第No. 6期

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Title

Interpolation of near offset seismic trace using surface-related multiples

单位

1.中国石油化工股份有限公司石油物探技术研究院,江苏南京211103;2.同济大学海洋与地球科学学院,上海200092

Organization

Guo Shujuan,Sinopec Geophysical Research Institute,Nanjing 211103,China

摘要

提出了一种基于原始含表层多次波数据的叠前共炮集地震数据插值新方法。相对于利用相邻道信息变换或外推插值的缺失地震数据重建,新方法直接利用含表层多次波的原始记录数据,通过互相关构建虚拟一次波,并在滑动时间-空间窗内对拟地震道进行最小二乘匹配滤波和均方根振幅校正,而后用于缺失近炮检距数据的插值重建。与已有的利用多次波生成虚拟一次波的方法相比,新方法无需进行多次波和一次波的提取,所以更易于实现。模型数据测试和实际资料试处理证明了新方法的有效性和实用性。

Abstract

A seismic trace interpolation method was presented based on raw prestack common shot gather with surface-related multiples.By using the method,we firstly generate the pseudo-primaries by the cross correlation of original seismic data to extract the seismic information included in the multiples,instead of nearby traces information conversion or rebuilding missing seismic data by extrapolation.The pseudo-traces is corrected by using Least-squares Matching Filter (LMF) and RMS amplitude correction in slipping time-space window for filling the trace gaps,and then the corrected traces is used for missing traces interpolation rebuilding.The method needs no extraction of primaries and multiples are easily realized.The feasibility and validity of this method is proved by model test and practical application.

关键词：

地震数据插值; 表层多次波; 拟地震道; 最小二乘匹配滤波; 均方根振幅校正;

Keywords:

seismic trace interpolation; surface-related multiples; pseudo-traces; Least-squares Matching Filter; RMS amplitude correction;

基金项目

DOI

10.3969/j.issn.1000-1441.2013.06.012