Angle domain reverse time migration with Gaussian beams in anisotropic media
Zhang Kai1, Duan Xin-yi1, Li Zhenchun1, Huang Jianping1, Zhang Qing2, Li Na3
1. China University of Petroleum (East China), Qingdao, Shandong 266580, China;
2. Exploration and Development Research Institute of Liaohe Oilfield, Panjin, Liaoning 124010, China;
3. Geophysical Research Institute of Zhongyuan Oilfield, SINOPEC, Puyang, Henan 457001, China
Abstract：Based on Green function we propose in this paper a new method of the angle domain reverse time migration with Gaussian beams in anisotropic media. This method introduces the kinematic and dynamic ray tracing systems with classic elastic parameters in anisotropic media, and combines with the computation of the angle information in Gaussian beams propagation process. Test results on international standard model data and real data show that the proposed method can accurately image anisotropic media, and obtain better imaging in low S/N and complex structures than Kirchhoff prestack depth migration.
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