三维黏声最小二乘逆时偏移方法模型研究

doi:10.11720/wtyht.2018.1559

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Abstract

In view of the problem of viscous imaging and the advantage of least-squares reverse time migration (LSRTM),a 3D viscoacoustic LSRTM method is proposed by using the viscoacoustic wave equation of the General Standard Linear Solid (GSLS),which is based on the adjoint operator of the 3D viscoacoustic wave equation and the frame of LSRTM.The polar encoding technology is used to dramatically decrease the computational cost and memory storage of the 3D viscoacoustic LSRTM,which can make it possible to be practical.In the numerical examples,the authors firstly verify the advantage of the proposed method over the traditional acoustic LSRTM using the Marmousi model.Finally,the test of the 3D flat model and salt dome model with Q proves the accuracy of the proposed 3D viscoacoustic LSRTM.

Key words： 3D viscoacoustic media least-squares reverse time migration adjoint operator encoding

Received: 12 December 2017 Published: 24 October 2018

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	Articles by authors
	Jin-Li LI
	Ying-Ming QU
	Jian-Xun LIU
	Zhen-Chun LI
	Kai WANG
	Bo YU

Cite this article:

Jin-Li LI,Ying-Ming QU,Jian-Xun LIU, et al. A model study of three-dimensional viscoacoustic least-squares reverse time migration[J]. Geophysical and Geochemical Exploration, 2018, 42(5): 1013-1025.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2018.1559 OR https://www.wutanyuhuatan.com/EN/Y2018/V42/I5/1013

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