Viscoacoustic reverse time migration of joint primaries and different-order multiples

被引:14
作者
Qu, Yingming [1 ]
Li, Jinli [2 ,3 ]
Guan, Zhe [4 ]
Li, Zhenchun [1 ]
机构
[1] China Univ Petr, Sch Geosci, Qingdao 266580, Peoples R China
[2] Chinese Acad Geol Sci, Inst Geophys & Geochem Explorat, Langfang 065000, Peoples R China
[3] Natl Ctr Geol Explorat Technol, Langfang 065000, Peoples R China
[4] Rice Univ, Appl Phys Program, Houston, TX 77005 USA
基金
中国国家自然科学基金;
关键词
FREE-SURFACE MULTIPLES; WAVE-FIELD; COMPENSATION; ATTENUATION; INVERSION; EQUATION; SCATTERING; ALGORITHM; RECORDS;
D O I
10.1190/GEO2019-0237.1
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Compared to primary arrivals, multiples have longer propagation paths and smaller reflection angles, leading to a wider illumination area in the horizontal direction and higher resolution in the vertical direction. Hence, it is better to make full use of the multiples rather than suppressing them. However, seismic attenuation exists widely in the subsurface medium, especially directly below the deep sea bottom. Therefore, to compensate for the attenuation effect during multiple imaging, we have developed a viscoacoustic reverse time migration (RTM) method of different-order multiples. Following the multiple propagation paths, we compensate for the attenuation during source wavefield forward propagation and receiver backward propagation, and we introduce a regularization operator to automatically eliminate the exponential high-frequency noise during the attenuation compensation process. Taking advantage of the full wavefield information, we jointly use the different-order multiples and primaries when implementing viscoacoustic RTM. In numerical examples, we validate the viscoacoustic RTM of different-order multiples in a three-layer attenuation model and an attenuating Sigsbee2B model. Our results suggest that our method can image the models using different-order multiples separately, which suppresses crosstalk artifacts, balances energy, raises resolution, and improves subsalt images dramatically.
引用
收藏
页码:S71 / S87
页数:17
相关论文
共 50 条
[31]   Source-independent Q-compensated viscoacoustic least-squares reverse time migration [J].
Liu, Wei ;
Shi, Ying ;
Wang, Ning ;
Wang, Weihong ;
Fang, Jinwei .
GEOPHYSICS, 2024, 89 (05) :S361-S377
[32]   Least-squares reverse-time migration of surface-related multiples [J].
Liu Xue-Jian ;
Liu Yi-Ke .
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2016, 59 (09) :3354-3365
[33]   Joint least-squares reverse time migration of primary and prismatic waves [J].
Yang, Jizhong ;
Liu, Yuzhu ;
Li, Yunyue Elita ;
Cheng, Arthur ;
Dong, Liangguo ;
Du, Yue .
GEOPHYSICS, 2019, 84 (01) :S29-S40
[34]   Steeply dipping structural target oriented viscoacoustic prismatic reverse time migration in frequency domain and its application [J].
Li, Jinli ;
Ma, Bo ;
Qu, Yingming ;
Zhu, Jianggui ;
Liu, Chang .
GEOPHYSICAL PROSPECTING, 2024, 72 (02) :367-377
[35]   Least-Squares Reverse-Time Migration of Water-Bottom-Related Multiples [J].
Zhang, Yanbao ;
Liu, Yike ;
Yi, Jia .
REMOTE SENSING, 2022, 14 (23)
[36]   Fast Least-Squares Reverse Time Migration of OBN Down-Going Multiples [J].
Zhang, Yanbao ;
Liu, Yike ;
Yi, Jia ;
Liu, Xuejian .
FRONTIERS IN EARTH SCIENCE, 2021, 9
[37]   Reverse time migration of viscoacoustic anisotropic pure qP-wave based on nearly constant Q model [J].
Zhang ShanShan ;
Gu BingLuo ;
Ding YiWen ;
Wang JiChuan ;
Li ZhenChun .
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2022, 65 (10) :4047-4062
[38]   Modified pure-viscoacoustic wave propagation and compensated reverse-time migration in transversely isotropic media [J].
Zhang, Yabing ;
Chen, Tongjun .
FRONTIERS IN EARTH SCIENCE, 2023, 11
[39]   Truncated pseudo-differential operator √-del2 and its applications in viscoacoustic reverse-time migration [J].
Yang, Jidong ;
Qin, Shanyuan ;
Huang, Jianping ;
Zhu, Hejun ;
Lumley, David ;
Mcmechan, George ;
Sun, Jiaxing ;
Zhang, Houzhu .
GEOPHYSICAL JOURNAL INTERNATIONAL, 2024, 237 (03) :1794-1807
[40]   Steeply dipping structural target-oriented viscoacoustic least-squares reverse time migration and its application [J].
Kang Chen ;
Song Han ;
Qi Ran ;
Long Wen ;
Guang-Zhi Zhang ;
Ying-Ming Qu .
Applied Geophysics, 2022, 19 :528-536