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Stress-Associated Intrinsic and Scattering Attenuation from Laboratory Ultrasonic Measurements on Shales

文献类型：期刊论文

作者Hu, Junhua1,2; Fu, Li-Yun1,3; Wei, Wei1; Zhang, Yan1
刊名PURE AND APPLIED GEOPHYSICS
出版日期2018-03-01
卷号175期号:3页码:929-962
关键词Shales anisotropy and heterogeneity ultrasonic waves P- and S-coda intrinsic and scattering attenuation elastic Monte Carlo method
ISSN号0033-4553
DOI10.1007/s00024-017-1705-9
文献子类Article
英文摘要Seismic attenuation is sensitive to stress-induced subtle changes in the physical state of rocks. In this study, the stress- and frequency-associated attenuation is quantified through ultrasonic measurements on three differently oriented cylindrical shale samples under various axial stresses. As an improvement to the single-scattering model, the elastic Monte Carlo method is employed to investigate multiple-scattering attenuations by incorporating the boundary reflections and wave conversions. Our results show that, as the axial stress increases, the intrinsic attenuation decreases in all directions, while the scattering attenuation decreases slightly in the direction perpendicular to the bedding but increases largely and nonlinearly in other directions. These discrepancies result from different attenuation mechanisms. Both the intrinsic and scattering attenuation are found to be largest in the direction 45A degrees to the bedding, but least in the perpendicular direction. The S-wave attenuation is larger and more sensitive to stress changes than P-wave attenuation due to its shorter wavelength. As expected from sandstone examples, the scattering attenuation in shales is significantly larger and more sensitive to stress changes than the intrinsic attenuation. The frequency dependence of scattering attenuation suggests that the peak frequency with the maximum scattering attenuation is independent of axial stresses, but varies in different directions of an individual rock with different heterogeneity and anisotropy scales. The peak frequency of S-coda is smaller and its peak scattering attenuation is larger than P-coda. In conclusion, the stress and frequency dependence of ultrasonic attenuations in shales differ largely in various directions, indicating significant anisotropy and heterogeneity.
WOS关键词MONTE-CARLO-SIMULATION ; RADIATIVE-TRANSFER THEORY ; SEISMIC-WAVE ATTENUATION ; ELASTIC-WAVES ; RANDOM-MEDIA ; SHEAR-WAVES ; CODA WAVES ; MULTIPLE-SCATTERING ; AMPLITUDE ATTENUATION ; SEISMOGRAM ENVELOPES
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000426759700012
出版者SPRINGER BASEL AG
资助机构Chinese Academy of Sciences(XDB10010400) ; Chinese Academy of Sciences(XDB10010400) ; National Natural Science Foundation of China(41604035) ; National Natural Science Foundation of China(41604035) ; China Postdoctoral Science Foundation(2016T90129) ; China Postdoctoral Science Foundation(2016T90129) ; Chinese Academy of Sciences(XDB10010400) ; Chinese Academy of Sciences(XDB10010400) ; National Natural Science Foundation of China(41604035) ; National Natural Science Foundation of China(41604035) ; China Postdoctoral Science Foundation(2016T90129) ; China Postdoctoral Science Foundation(2016T90129) ; Chinese Academy of Sciences(XDB10010400) ; Chinese Academy of Sciences(XDB10010400) ; National Natural Science Foundation of China(41604035) ; National Natural Science Foundation of China(41604035) ; China Postdoctoral Science Foundation(2016T90129) ; China Postdoctoral Science Foundation(2016T90129) ; Chinese Academy of Sciences(XDB10010400) ; Chinese Academy of Sciences(XDB10010400) ; National Natural Science Foundation of China(41604035) ; National Natural Science Foundation of China(41604035) ; China Postdoctoral Science Foundation(2016T90129) ; China Postdoctoral Science Foundation(2016T90129)
源URL[http://ir.iggcas.ac.cn/handle/132A11/82964]  
专题中国科学院地质与地球物理研究所
通讯作者Fu, Li-Yun
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.China Univ Petr East China, Sch Geosci, Qingdao 266580, Shandong, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Junhua,Fu, Li-Yun,Wei, Wei,et al. Stress-Associated Intrinsic and Scattering Attenuation from Laboratory Ultrasonic Measurements on Shales[J]. PURE AND APPLIED GEOPHYSICS,2018,175(3):929-962.
APA Hu, Junhua,Fu, Li-Yun,Wei, Wei,&Zhang, Yan.(2018).Stress-Associated Intrinsic and Scattering Attenuation from Laboratory Ultrasonic Measurements on Shales.PURE AND APPLIED GEOPHYSICS,175(3),929-962.
MLA Hu, Junhua,et al."Stress-Associated Intrinsic and Scattering Attenuation from Laboratory Ultrasonic Measurements on Shales".PURE AND APPLIED GEOPHYSICS 175.3(2018):929-962.

入库方式： OAI收割

来源：地质与地球物理研究所

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