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波阻抗反演技术中空变子波的求取
石油物探
2002年 41卷 第No. 4期
阅读：84
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Title
Calculation of spatial-variant wavelet in acoustic impedance inversion
单位
江汉石油管理局物探处, 湖北潜江433100
Organization
Geophysical Exploration Division of Jianghan Petroleum Administration, Qianjiang 433100, China
摘要
首先将反演技术中的地震子波定义为地震记录与初始模型之间的匹配因子;然后分析了现行软件中空变子波求取的办法及存在的问题;最后提出了利用地震记录与初始模型联合求子波,并采用多道滑动的办法来解决子波空变问题,从而使地震子波的求取更为合理准确,给约束反演的准确性奠定了良好的基础。应用实例证明,此方法是解决子波空变问题的一个好办法。
Abstract
In this paper we assume that seismic wavelet is amatch factor between seismic records and initialmodel. After an analysis of drawbacks associated with software available for calculation of spatial variant wavelet, this paper presents amethod to calculate wavelet by a combination of seismic records and initialmodel. The problem of wavelet varying with space is overcome bymulti-trace smoothing. Therefore, the resulting seismic wavelet ismore reasonable, which provide a solid foundation for constrained inversion. The feasibility of themethod is demonstrated on real seismic data
关键词：
约束反演;
初始模型;
空变子波;
匹配因子;
最小二乘法;
多道滑动;
Keywords:
constraint inversion;
initialmodel;
spatial-variable wavelet;
match factor;
the least squaremethod;
multi-trace smoothing;
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