A stabilized approach for reverse time migration on visco-acoustic VTI medium

The existence of anisotropy and viscosity in real stratum has quite influence on seismic waveform and amplitude value. Without considering that, final migration result may suffer from low resolution and even wrong imaging position. To get better reservoir description in complex area, the application of generalized standard linear solid theory is extended from isotropic media to anisotropic media. By introducing the regularization operator to eliminate high-frequency instability problem, robust and applicable inverse wave-field continuation is achieved. Based on the combination of pseudo-spectral method and finite difference method, efficient visco-acoustic VTI RTM gets realized and shows improved imaging quality on synthetic data.