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An efficient method to model seismic propagation in diffusive-viscous media with dipping interfaces
FENGYUAN SUN,
JINGHUAI GAO,
NAIHAO LIU
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School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, P.R. China, National Engineering Laboratory for Offshore Oil Exploration, Xi’an 710049, P.R.China.,
JSE 2019, 28(1), 21–40;
Submitted: 3 February 2018 | Accepted: 10 November 2018 | Published: 1 February 2019
© 2019 by the Authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution -Noncommercial 4.0 International License (CC-by the license) ( https://creativecommons.org/licenses/by-nc/4.0/ )
Abstract
Sun, F.Y., Gao, J.H. and Liu, N.H., 2019. An efficient method to model seismic propagation in diffusive-viscous media with dipping interfaces. Journal of Seismic Exploration, 28: 21-40. Partial wavefield that is not be interfered by other waves plays a significant role in seismic exploration. In many applications, geophysicists are only interested in partial wavefields. In this work, we first derive an efficient workflow to simulate partial wavefields in the diffusive-viscous media with the presence of dipping layers. It can efficiently calculate various partial wavefields for investigating the seismic exploration based on the diffusive-viscous theory. Especially, the reflection/transmission coefficients in the dip layered media are studied through the coordinate transformation and the plane wave theory. Then, a fast integral method is used to synthesize the wavefields from a point source, and the best integral path is chosen to improve the accuracy and the computational efficiency. By choosing the appropriate sign of the complex slowness, the instability phenomenon in the computation process can be avoided. The analysis and numerical examples show that the proposed method is stable and efficient.
Keywords
partial wavefield
layered diffusive-viscous media
reflectivity method
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