Study on Stress-Velocity Elastic with 2.5D Numerical Simulation for Wavefields of Cross-Hole Seismic in Anisotropy Heterogeneous Medium

Bao Tong Liu

doi:10.4028/www.scientific.net/AMR.703.190

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Study on Stress-Velocity Elastic with 2.5D Numerical Simulation for Wavefields of Cross-Hole Seismic in Anisotropy Heterogeneous Medium

Abstract:

Numerical simulation is an effective approach for identifying and analyzing elastic wavefields in subsurface. From the first-order stress-velocity elastic wave equations in VTI medium, this paper use high-order stagger-grid finite-difference scheme to compute 3C wavefields in 2D space, performing 2.5D simulation. A method of establishing geological model is presented. Boundary reflections are suppressed successfully by PML. Characteristics of synthetic data by this method are coincident with field data in both kinematics and dynamics