| 层状介质的快速物性反演 |
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| 引用本文： | 赵振峰,刘迎曦.层状介质的快速物性反演[J].石油地球物理勘探,1993,28(3):259-266. |
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| 作者姓名： | 赵振峰 刘迎曦 |
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| 作者单位： | 大连理工大学工程力学研究所，大连理工大学工程力学研究所，大连理工大学工程力学研究所 |
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| 摘 要： | 波动方程反演所面临的主要困难之一是计算量过大。本文针对层状介质的特殊性,试图就物性反演问题提出一种有效的快速迭代算法。该方法在震源函数变换法(文献1)的基础上.忽略多次波的影响.以一次或二次反射波作为合成地震记录的近似值来求梯度阵。尽管该方法的迭代次数有所增加,但总的用机时间比原方法用差分求导数计算梯度阵的过程大大减少。试算结果表明,本文方法对提高层状介质反演的计算效率十分有效。
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| 关 键 词： | 广义 线性反演 层状介质 地震勘探 |
Linbin. Fast inversion of physical parameters of stratified medium |
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| Zhao Zhenfeng,Liu Yingyi Zhang Linbin Zhao Zhenfeng,Engineering Mechanics Institute. Dalian University of Science and Engineering,Dalian City,Liaoning Province,Internal Postcode:.Linbin. Fast inversion of physical parameters of stratified medium[J].Oil Geophysical Prospecting,1993,28(3):259-266. |
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| Authors: | Zhao Zhenfeng Liu Yingyi Zhang Linbin Zhao Zhenfeng Engineering Mechanics Institute Dalian University of Science and Engineering Dalian City Liaoning Province Internal Postcode: |
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| Affiliation: | Zhao Zhenfeng,Liu Yingyi Zhang Linbin Zhao Zhenfeng,Engineering Mechanics Institute. Dalian University of Science and Engineering,Dalian City,Liaoning Province,Internal Postcode: 116023 |
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| Abstract: | One of the major troubles involved in wave equation inversion is too much computation. An effectual fast iteration method for inversion of physical parameters of stratified medium is recommended here. On the basis of source function transform (literature 1), this method neglects multiple influence and takes primary reflection or secondary reflection as approximate synthetic seismogram to solve for gradient matrix. In spite of slight more iteration times, this method needs much less computer time than the original method that makes difference operation to solve for derivative and gradient matrix. It is experimentlly proved that this method is very efficient to speeding up inversion in stratified medium. |
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| Keywords: | generalized linear inversion stratified medium seismic exploration wave equation |
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