Full Waveform Inversion Based on Wavefield Correlation

6th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Chen, Xue^1 ; Yang, Helong^1

Hebei GEO University, Shijiazhuang

050031, China^1

关键词: 2d frequency domains;    Conventional methods;    Frequency ranges;    Full-waveform inversion;    Local minimums;    Seismic exploration;    Wavefields;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/472/1/012069/pdf
DOI  :  10.1088/1757-899X/472/1/012069

来源: IOP

【 摘 要 】

Low frequencies and initial model play a crucial role in full waveform inversion (FWI). However, in traditional seismic exploration, the frequency range of signals recorded by receivers is limited, and a good initial model for FWI is not available easily, leading to FWI algorithms easily fall into local minima. We propose a wavefield correlation method to improve cycle skipping issue of FWI. Test of 2D frequency domain FWI based on Marmousi model shows that the result of inversion has a better result than conventional method.