Seismic wave modelling and full-waveform inversion in VEAM
Dr. Bing Zhou
This project applies advanced numerical methods and develop computer software to numerically simulate seismic wave propagations in 2D/2.5D/3D VEAM, which are often encountered in seismic exploration of carbonate reservoirs. The numerical simulations offer a useful tool for Geoengineers to characterize the wave propagation in such complex media and correctly process and interpret seismic data.
Computations of seismic wave velocities in VEAM
Dr. Bing Zhou
This project employs the complex-valued elastic moduli of rocks for the Christoffel equation and develops an accurate and efficient method to solve the Christoffel equation and obtain the complex-valued phase and group velocities. The imaginary parts of the wave velocities quantitatively define the attenuation of wave energy in VEAM, and become applicable for calculations of the real travel-times and imaginary travel-times (attenuation) of three wave modes: qP-, qSV- and qSH-wave in VEAM.
Seismic ray tracing and ray tomography in 2D/3D VEAM
Dr. Bing Zhou
Most seismic ray tracing methods cannot be applicable for VEAM due to using the assumption of elastic media. This project employs the complex-valued phase and group velocities to compute the real travel-times and imaginary travel-time (attenuation), as well as the ray-paths of three wave modes (qP, qSV, qSH) in 2D/3D VEAM. The developed new ray tracing methods becomes the fundamental part of seismic ray tomography to image subsurface viscoelastic anisotropic structures.
Seismic full-waveform inversion in 2D/3D VEAM
Dr. Bing Zhou
This project bases on newly-developed computer software of 2D/3D frequency-domain or time-domain seismic wave modeling in VEAM, and investigates the full-waveform inversion with the multi-components of seismic spectral data or time-sequence to image the 2D/3D subsurface geological structures. The multi-component data may be the vertical and horizontal amplitude spectra or time-sequences of all available common shot gathers, acquired from surface, or vertical seismic profiling, or cross-hole seismic surveys.