De-absorption prestack time migration : steep dip structure imaging and its application

doi:10.6038/cjg2018L0092

	De-absorption prestack time migration : steep dip structure imaging and its application
	Liu Wei 1,2; Zhang JianFeng 1,2
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2018-02-01
卷号	61 期号:2 页码:707-715
关键词	Viscoelastic media Pre-stack time migration Steep dip structure Travel time GPU speed up
ISSN号	0001-5733
DOI	10.6038/cjg2018L0092
文献子类	Article
英文摘要	De-absorption pre-stack time migration (PSTM) can compensate absorption and dispersion via an actual wave propagation path using effective Q parameters. Compared with conventional pre-stack time migration, it has higher resolution image. In this paper, we modified the conventional travel time method to a high order one by introducing two non-dimensional parameters. These parameters are obtained by optimizing the travel time equation and the travel time calculated using the Snell's law. To improve the robustness of imaging steep-dip structure and faults, we present a new travel time calculation method useful for graphic process unit (GPU) and a seismic trace split method. Applying the method to the real 3D land seismic data produces significant improvements in resolution especially in steep-dip structure and faults. At the same time, the improved method can reduce the calculation time by more than one third.
WOS关键词	DEPTH MIGRATION ; IMPLEMENTATION ; GPU
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000425840900028
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82722]
专题	中国科学院地质与地球物理研究所
通讯作者	Liu Wei
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu Wei,Zhang JianFeng. De-absorption prestack time migration : steep dip structure imaging and its application[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(2):707-715.
APA	Liu Wei,&Zhang JianFeng.(2018).De-absorption prestack time migration : steep dip structure imaging and its application.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(2),707-715.
MLA	Liu Wei,et al."De-absorption prestack time migration : steep dip structure imaging and its application".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.2(2018):707-715.