IGGCAS OpenIR  > 油气资源研究院重点实验室
A study on gravity field downward continuation using the regularized equivalent-layer method
Li XiaoJie1,2,3; Wang ZhenLi1,3
2018-07-01
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
Volume61Issue:7Pages:3028-3036
AbstractIn 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.
KeywordDownward continuation Equivalent layer Tikhonov regularization Iterative compensation
DOI10.6038/cjg2018L0249
WOS KeywordPOTENTIAL FIELDS ; ITERATION METHOD ; MAGNETIC-FIELD ; SURFACE ; REDUCTION ; PLANE
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000438837800030
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/94029
Collection油气资源研究院重点实验室
Corresponding AuthorWang ZhenLi
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
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.
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