叠前深度偏移地震记录直接模拟方法

doi:10.13810/j.cnki.issn.1000-7210.2020.04.005

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Abstract Pre-stack depth migration (PSDM) imaging is an important step for high-resolution and high-precision seismic exploration. In order to get good PSDM imaging results,and avoid the cumbersome processes of source record forward modeling,normal processing and migration,this paper proposes a direct simulation method for PSDM record. Without wavefield forward modeling and migration,this method uses wavelets,recording parameters and ray path to construct a point spread operator in wavenumber domain,and produces theoretical imaging results based the velocity model and the point spread operator. The method is simple and effective,and delivers precise imaging results. Based on the imaging results,problems in the recording geometry and the quality of seismic data can be detected. It is a reference to optimizing geometry parameters and evaluating imaging quality which are basic data for seismic interpretation. The method can meet the theoretical research requirements of seismic acquisition,processing and interpretation.

Key words： simulation to PSDM record generalized convolution scattering tomography point spread operator

Received: 17 September 2019

PACS:

P631

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	Articles by authors
	WU Han
	LIAN Ximeng
	SUN Chengyu
	RUI Yongjun
	CAI Ruiqian
	DENG Xiaofan

Cite this article:

WU Han,LIAN Ximeng,SUN Chengyu等. Research on direct simulation to seismic record of pre-stack depth migration[J]. OGP, 2020, 55(4): 747-753.

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http://www.ogp-cn.com/EN/10.13810/j.cnki.issn.1000-7210.2020.04.005 OR http://www.ogp-cn.com/EN/Y2020/V55/I4/747

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