IGGCAS OpenIR  > 页岩气与地质工程院重点实验室
Tomography with sparseness regularisation for ultrasonic velocity imaging
Zhu, Wei1; Wang, Shangxu1; Chang, Xu2; Zhai, Hongyu3; He, Taiming3; Wu, Hezhen3
2022-03-04
Source PublicationJOURNAL OF GEOPHYSICS AND ENGINEERING
ISSN1742-2132
Volume19Issue:1Pages:85-105
AbstractUltrasonic tomography, which is widely used in the study of the fracturing process of rocks, often exhibits low resolution due to insufficient ray coverage, particularly while evaluating the three-dimensional (3D) fractures. To resolve this issue, we adopted sparseness regularisation in tomography to reconstruct the ultrasonic velocity of rocks. Both numerical and laboratory experiments demonstrate that tomography with sparseness regularisation generates velocity images with clear fracture morphology than that with Tikhonov regularisation. Dynamic monitoring of the fracturing process of a granite slab with two-dimensional (2D) velocity images can reveal the accurate development of the fracturing process. The experiment on the internal structure of tight sandstone after hydraulic fracturing reveals demarcated low-velocity regions in the 3D ultrasonic velocity images of tomography with sparseness regularisation. These low-velocity regions correspond to the positions of the fractures when compared to the X-ray scanning images. Thus, tomography with sparseness regularisation can improve the resolution of ultrasonic velocity images, which can be used to accurately describe the fracture development and strain localisation during rock deformation.
Keywordultrasonic velocity tomography sparseness regularisation fracturing process fracture morphology
DOI10.1093/jge/gxac001
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordTRAVEL-TIME TOMOGRAPHY ; ACOUSTIC-EMISSION ; INVERSION ; LAC
Language英语
Funding ProjectNational Natural Science Foundation of China[41974156] ; National Natural Science Foundation of China[41930425]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000764887200001
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/104973
Collection页岩气与地质工程院重点实验室
Corresponding AuthorChang, Xu
Affiliation1.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
3.China Earthquake Adm, Inst Geophys, Beijing, Peoples R China
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhu, Wei,Wang, Shangxu,Chang, Xu,et al. Tomography with sparseness regularisation for ultrasonic velocity imaging[J]. JOURNAL OF GEOPHYSICS AND ENGINEERING,2022,19(1):85-105.
APA Zhu, Wei,Wang, Shangxu,Chang, Xu,Zhai, Hongyu,He, Taiming,&Wu, Hezhen.(2022).Tomography with sparseness regularisation for ultrasonic velocity imaging.JOURNAL OF GEOPHYSICS AND ENGINEERING,19(1),85-105.
MLA Zhu, Wei,et al."Tomography with sparseness regularisation for ultrasonic velocity imaging".JOURNAL OF GEOPHYSICS AND ENGINEERING 19.1(2022):85-105.
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