Gaussian Beam Prestack Depth Migration of Converted Wave for TI Media
Han, J.G.;  Wang, Y.;  Lu, J.;  Zhang, M.G.
2014
会议日期2014
会议地点Amsterdam; Netherlands
英文摘要

More and more multi-component seismic data have been acquired in land and offshore, since multi-wave is beneficial for structural imaging, fluid detection, and reservoir monitoring. Because S-waves are typically influenced by anisotropy in the medium than P-wave, the anisotropy can't be ignored during the converted PS-wave imaging. Gaussian beam migration, as an elegant and efficient depth migration method, has becoming a hot in the study of PS-wave migration, with its accuracy comparable to wave equation migration and flexibility comparable to Kirchhoff migration. In this paper, we introduce an anisotropic Gaussian beam prestack depth migration (GB-PSDM) method for the converted PS-wave, of which the anisotropic media can be a transversely isotropic (TI) media with a symmetry axis vertical or tilted. Based on the anisotropic kinematic and dynamic ray tracing, we present the PS-wave common shot gathers GB-PSDM imaging condition and derive the P-and SV-waves ray tracing in two-dimensional TI media. Tests of numerical models show that the method introduced here is accurate and efficient for the converted PS-wave imaging.

语种英语
内容类型会议论文
源URL[http://ir.gyig.ac.cn/handle/42920512-1/11168]  
专题地球化学研究所_矿床地球化学国家重点实验室
作者单位1.China University of Geosciences, China
2.Institute of Geochemistry, China
3.Institute of Geology and Geophysics, China
推荐引用方式
GB/T 7714
Han, J.G.;Wang, Y.;Lu, J.;Zhang, M.G.. Gaussian Beam Prestack Depth Migration of Converted Wave for TI Media[C]. 见:. Amsterdam; Netherlands. 2014.
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