A study on gravity field downward continuation using the regularized equivalent-layer method

doi:10.6038/cjg2018L0249

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院油气资源研究重点实验室

	A study on gravity field downward continuation using the regularized equivalent-layer method
	Li XiaoJie 1,2,3; Wang ZhenLi 1,3
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2018-07-01
卷号	61 期号:7 页码:3028-3036
关键词	Downward continuation Equivalent layer Tikhonov regularization Iterative compensation
ISSN号	0001-5733
DOI	10.6038/cjg2018L0249
英文摘要	In recent years, dynamic reservoir monitoring technology using time-lapse microgravity method has been receiving much attention of researchers at home and abroad. As a result of the low signal to noise ratio (SNR) and weak signal in observation data, it is impossible to quantitatively interpret fluid migration in reservoirs using time-lapse microgravity data. In order to suppress observation noise and enhance weak signals, this article presents the regularized equivalent source downward continuation (RESDC) method, and derives the RESDC operator in the wavenumber domain. Besides, the iterative compensation algorithm is proposed to compensate for amplitude attenuation of the downward continuation field. With tests on synthetic data, this work further studies the wavenumber response of the filtering operators and the downward continuation operators of regularized equivalent layers at different depths. Results show that the downward continuation field of the RESDC method is more accurate and stable compared with the field from the Tikhonov downward continuation method. Applying the iterative compensation RESDC method to field data of a time-lapse microgravity survey verifies that the proposed method can effectively enhance weak signals and stably realizes large-depth downward continuation.
WOS关键词	POTENTIAL FIELDS ; ITERATION METHOD ; MAGNETIC-FIELD ; SURFACE ; REDUCTION ; PLANE
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000438837800030
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/94029]
专题	地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者	Wang ZhenLi
作者单位	1.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Li XiaoJie,Wang ZhenLi. A study on gravity field downward continuation using the regularized equivalent-layer method[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(7):3028-3036.
APA	Li XiaoJie,&Wang ZhenLi.(2018).A study on gravity field downward continuation using the regularized equivalent-layer method.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(7),3028-3036.
MLA	Li XiaoJie,et al."A study on gravity field downward continuation using the regularized equivalent-layer method".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.7(2018):3028-3036.