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三维声波全波形反演的实现与验证

石油物探

2013年 52卷第No. 4期

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Title

Implementation and validation of 3D acoustic full waveform inversion

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.中国石油大学(华东)，山东青岛266580

Organization

Hu Guanghui,Sinopec Geophysical Research Institute,Nanjing 211103,China

摘要

全波形反演利用叠前地震波场的运动学和动力学信息重建地下地球物理参数，具有揭示复杂地质背景下构造细节及岩性的潜在能力。介绍了频率域反演联合时间域正演的优化算法的三维声波全波形反演方法及算法实现。该算法的正演实现使用了伪保守形式的一阶速度-压力场声波方程。应用三维SEG/EAGE模型反演实例验证了三维声波全波形反演方法的有效性。

Abstract

The full waveform inversion (FWI) method makes use of the kinematic and dynamic information of pre-stack seismic data to rebuild underground geophysical parameters.Due to its high resolution,it has the potential of revealing structure details and lithology characteristic under complex geological background.We present some methodological and algorithmic developments of 3D acoustic full waveform inversion by frequency-domain inversion combined with time-domain forward.The FWI algorithm relies on a pseudo-conservative form of the velocity-stress acoustic wave equation.The numerical simulation data of 3D SEG/EAGE target model verified 3D acoustic full waveform inversion algorithm.

关键词：

三维全波形反演; 伴随状态法; 有限差分; 并行算法; 模型验证;

Keywords:

3D FWI; adjoint state method; finite-differences; parallel computation; model verification;

基金项目

DOI

10.3969/j.issn.1000-1441.2013.04.012