IGGCAS OpenIR  > 地球与行星物理院重点实验室
A Stable Q Compensated Reverse Time Migration Method Based on Excitation Amplitude Imaging Condition
Li, Qingqing1; Fu, Li-Yun1; Sun, Weijia2; Wei, Wei2; Hou, Wanting1
2020-07-01
Source PublicationCOMMUNICATIONS IN COMPUTATIONAL PHYSICS
ISSN1815-2406
Volume28Issue:1Pages:141-166
AbstractThe stability and efficiency, especially the stability, are generally concerned issues in Q compensated reverse time migration (Q-RTM). The instability occurs because of the exponentially boosted high frequency ambient noise during the forward or backward seismic wavefield propagation. The regularization and low-pass filtering methods are two effective strategies to control the instability of the wave propagation in Q-RTM. However, the regularization parameters are determined experimentally, and the wavefield cannot be recovered accurately. The low-pass filtering method cannot balance the selection of cutoff frequency for varying Q values, andmay damage the effective signals, especiallywhen the signal-to-noise ratio (SNR) of the seismic data is low, the Q-RTM will be a highly unstable process. In order to achieve the purpose of stability, the selection of cutoff frequency will be small enough, which can cause great damage to the effective high frequency signals. In this paper, we present a stable Q-RTMalgorithm based on the excitation amplitude imaging condition, which can compensate both the amplitude attenuation and phase dispersion. Unlike the existing Q-RTM algorithms enlarging the amplitude, the exponentially attenuated seismic wavefield will be used during both the forward and backward wavefield propagation of Q-RTM. Therefore, the new Q- RTM algorithm is relative stable, even for the low SNR seismic data. In order to show the accuracy and stability of our stable Q-RTM algorithm clearly, an example based on Graben model will be illustrated. Then, a realistic BP gas chimney model further demonstrates that the proposed method enjoys good stability and anti-noise performance compared with the traditional Q-RTM with amplitude amplification. Compare the Q-RTMimages of these twomodels to the reference images obtained by the acoustic RTMwith acoustic seismic data, the new Q-RTM results match the reference images quite well. The proposed method is also tested using a field seismic data, the result shows the effectiveness of our proposed method.
KeywordStable reverse time migration attenuation
DOI10.4208/cicp.OA-2018-0075
Funding OrganizationStrategic Research Program of the Chinese Academy of Sciences ; Strategic Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Research Program of the Chinese Academy of Sciences ; Strategic Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Research Program of the Chinese Academy of Sciences ; Strategic Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Research Program of the Chinese Academy of Sciences ; Strategic Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China
Language英语
Funding ProjectStrategic Research Program of the Chinese Academy of Sciences[XDA14010303] ; National Natural Science Foundation of China[41930429] ; National Natural Science Foundation of China[41804123]
Funding OrganizationStrategic Research Program of the Chinese Academy of Sciences ; Strategic Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Research Program of the Chinese Academy of Sciences ; Strategic Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Research Program of the Chinese Academy of Sciences ; Strategic Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Research Program of the Chinese Academy of Sciences ; Strategic Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaPhysics
WOS SubjectPhysics, Mathematical
WOS IDWOS:000532318100008
PublisherGLOBAL SCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/96714
Collection地球与行星物理院重点实验室
Corresponding AuthorLi, Qingqing
Affiliation1.China Univ Petr, Sch Geosci, Qingdao 266555, Shandong, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Li, Qingqing,Fu, Li-Yun,Sun, Weijia,et al. A Stable Q Compensated Reverse Time Migration Method Based on Excitation Amplitude Imaging Condition[J]. COMMUNICATIONS IN COMPUTATIONAL PHYSICS,2020,28(1):141-166.
APA Li, Qingqing,Fu, Li-Yun,Sun, Weijia,Wei, Wei,&Hou, Wanting.(2020).A Stable Q Compensated Reverse Time Migration Method Based on Excitation Amplitude Imaging Condition.COMMUNICATIONS IN COMPUTATIONAL PHYSICS,28(1),141-166.
MLA Li, Qingqing,et al."A Stable Q Compensated Reverse Time Migration Method Based on Excitation Amplitude Imaging Condition".COMMUNICATIONS IN COMPUTATIONAL PHYSICS 28.1(2020):141-166.
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