The stability problem of reverse time migration for viscoacoustic VTI media |
| |
Authors: | Xiao-Dong Sun Zhong-Hui Ge Zhen-Chun Li Ying Hong |
| |
Institution: | 1.China University of Petroleum (East China),Qingdao,China;2.Laboratory for Marine Mineral Resources,Qingdao National Laboratory for Marine Science and Technology,Qingdao,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. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|