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Elastic wave propagation and scattering in prestressed porous rocks
Fu, Li-Yun1,2; Fu, Bo-Ye3,4,5; Sun, Weijia3; Han, Tongcheng1,2; Liu, Jianlin1,2
2020-05-22
Source PublicationSCIENCE CHINA-EARTH SCIENCES
ISSN1674-7313
Pages21
AbstractPoro-acoustoelastic theory has made a great progress in both theoretical and experimental aspects, but with no publications on the joint research from theoretical analyses, experimental measurements, and numerical validations. Several key issues challenge the joint research with comparisons of experimental and numerical results, such as digital imaging of heterogeneous poroelastic properties, estimation of acoustoelastic constants, numerical dispersion at high frequencies and strong heterogeneities, elastic nonlinearity due to compliant pores, and contamination by boundary reflections. Conventional poro-acoustoelastic theory, valid for the linear elastic deformation of rock grains and stiff pores, is modified by incorporating a dual-porosity model to account for elastic nonlinearity due to compliant pores subject to high-magnitude loading stresses. A modified finite-element method is employed to simulate the subtle effect of microstructures on wave propagation in prestressed digital cores. We measure the heterogeneity of samples by extracting the autocorrelation length of digital cores for a rough estimation of scattering intensity. We conductexperimental measurements with a fluid-saturated sandstone sample under a constant confining pressure of 65 MPa and increasing pore pressures from 5 to 60 MPa. Numerical simulations for ultrasound propagation in the prestressed fluid-saturated digital core of the sample are followed based on the proposed poro-acoustoelastic model with compliant pores. The results demonstrate a general agreement between experimental and numerical waveforms for different stresses, validating the performance of the presented modeling scheme. The excellent agreement between experimental and numerical coda quality factors demonstrates the applicability for the numerical investigation of the stress-associated scattering attenuation in prestressed porous rocks.
KeywordPoro-acoustoelasticity with compliant pores Elastic waves Prestressed porous rocks Numerical modeling Stress-induced scattering attenuation
DOI10.1007/s11430-019-9615-3
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Major Project of China ; National Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Major Project of China ; National Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Major Project of China ; National Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Major Project of China ; National Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS KeywordPARTIALLY SATURATED ROCKS ; BIOT SLOW-WAVE ; CODA WAVES ; VELOCITY-STRESS ; INTRINSIC ATTENUATION ; NUMERICAL-SIMULATION ; ELEMENT-METHOD ; SEISMIC-WAVES ; PORE PRESSURE ; FLUID
Language英语
Funding ProjectNational Natural Science Foundation of China[41821002] ; National Major Project of China[2017ZX05008007] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010303]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Major Project of China ; National Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Major Project of China ; National Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Major Project of China ; National Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Major Project of China ; National Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000535167800001
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/96694
Collection地球与行星物理院重点实验室
Corresponding AuthorFu, Li-Yun
Affiliation1.China Univ Petr East China, Key Lab Deep Oil & Gas, Qingdao 266580, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
4.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Fu, Li-Yun,Fu, Bo-Ye,Sun, Weijia,et al. Elastic wave propagation and scattering in prestressed porous rocks[J]. SCIENCE CHINA-EARTH SCIENCES,2020:21.
APA Fu, Li-Yun,Fu, Bo-Ye,Sun, Weijia,Han, Tongcheng,&Liu, Jianlin.(2020).Elastic wave propagation and scattering in prestressed porous rocks.SCIENCE CHINA-EARTH SCIENCES,21.
MLA Fu, Li-Yun,et al."Elastic wave propagation and scattering in prestressed porous rocks".SCIENCE CHINA-EARTH SCIENCES (2020):21.
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