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A robust surface-consistent residual phase correction method based on migrated gathers

文献类型：期刊论文

作者Xu, Jincheng; Zhang, Hao; Zhang, Jianfeng
刊名EXPLORATION GEOPHYSICS
出版日期2018-06-01
卷号49期号:3页码:336-344
关键词cross-correlation migrated gathers prestack time migration residual phase corrections
ISSN号0812-3985
DOI10.1071/EG17017
文献子类Article
英文摘要Conventional residual static corrections determine the residual statics (time shifts) using common mid-point (CMP) gathers to estimate and correct anomalies induced by the near-surface. These time shifts disregard the phase errors existing in the data, which will reduce the resolution of the stacked image. Further errors result when reflection events in CMP gathers do not exhibit hyperbolic moveout. In order to solve these problems, we propose a robust surface-consistent residual phase correction method that simultaneously resolves both time shifts and constant phase rotations based on migrated gathers. The surface-consistent residual statics and phase are obtained from the migrated gathers expressed in terms of shot and receiver locations. We modified the standard technique of estimating the time shift corrections to include a surface-consistent constant phase rotation term. The proposed dual parameter algorithm (time shift and constant phase rotation) proved on a synthetic example that it was superior to conventional residual statics for improving the coherence of trace gathers. The computational effort can be reduced by generating migrated gathers and estimating the dual parameters in a spatially varying time window. We applied the proposed method to both synthetic and real data, and improved results were obtained with both.
WOS关键词PRESTACK TIME MIGRATION ; STATICS ESTIMATION ; WAVE-PROPAGATION ; GRID METHOD ; MAXIMIZATION
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000435194900008
出版者CSIRO PUBLISHING
资助机构National Natural Science Fund of China(41330316) ; National Natural Science Fund of China(41330316) ; National Natural Science Fund of China(41330316) ; National Natural Science Fund of China(41330316) ; National Natural Science Fund of China(41330316) ; National Natural Science Fund of China(41330316) ; National Natural Science Fund of China(41330316) ; National Natural Science Fund of China(41330316)
源URL[http://ir.iggcas.ac.cn/handle/132A11/88210]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Xu, Jincheng
作者单位Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Jincheng,Zhang, Hao,Zhang, Jianfeng. A robust surface-consistent residual phase correction method based on migrated gathers[J]. EXPLORATION GEOPHYSICS,2018,49(3):336-344.
APA Xu, Jincheng,Zhang, Hao,&Zhang, Jianfeng.(2018).A robust surface-consistent residual phase correction method based on migrated gathers.EXPLORATION GEOPHYSICS,49(3),336-344.
MLA Xu, Jincheng,et al."A robust surface-consistent residual phase correction method based on migrated gathers".EXPLORATION GEOPHYSICS 49.3(2018):336-344.

入库方式： OAI收割

来源：地质与地球物理研究所

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