The stability problem of reverse time migration for viscoacoustic VTI media
Sun Xiao-Dong1,2, Ge Zhong-Hui1, Li Zhen-Chun1, and Hong Ying1
1. China University of Petroleum (East China), Qingdao 266580, China.
2. Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
Abstract：
In real strata anisotropy and viscosity extensively exists. They degraded waveforms in amplitude, resulting in which reducing of image resolution. To obtain high-precision imaging of deep reservoirs, we extended the separated viscous and anisotropic reverse time migration (RTM) to a stable viscoacoustic anisotropic RTM for vertical transverse isotropic (VTI) media, based on single generalized standard and linear solid (GSLS) media theory.. We used a pseudo-spectral method to develop the numerical simulation. By introducing a regularization operator to eliminate the high-frequency instability problem, we built a stable inverse propagator and achieved viscoacoustic VTI media RTM. High-resolution imaging results were obtained after correcting for the effects of anisotropy and viscosity. Synthetic tests verify the validity and accuracy of algorithm.
. The stability problem of reverse time migration for viscoacoustic VTI media[J]. APPLIED GEOPHYSICS, 2016, 13(4): 608-613.
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2016, Vol. 13 
