一种衰减及速度各向异性介质地震波数值模拟方法及系统
By constructing a pure pseudo-longitudinal wave fractional-order Laplace operator viscous acoustic wave equation for attenuation and velocity anisotropic media, the problem that existing technologies cannot accurately describe attenuation and velocity anisotropy effects is solved, and accurate quantitative simulation of seismic wave propagation characteristics in strongly attenuated and anisotropic media is realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA UNIV OF PETROLEUM (EAST CHINA)
- Filing Date
- 2023-08-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing wave equations cannot accurately characterize the attenuation anisotropy and velocity anisotropy effects of pure wave modes, especially in strongly attenuated and velocity-anisotropic media, making it difficult to achieve an accurate quantitative description of seismic wave propagation characteristics.
A pseudo-longitudinal wave equation with fractional-order Laplace operator for attenuated and velocity-anisotropic media containing a single component is constructed. Combined with the generalized viscoelastic anisotropic constitutive relation and the anisotropic constant quality factor model, the seismic wave field is solved by the pseudospectral method, and the seismic wave equation for attenuated and velocity-anisotropic media is established.
It can accurately describe the attenuation and velocity anisotropy effects of seismic waves in strongly attenuated and anisotropic media, effectively describe the decoupled amplitude attenuation and phase delay characteristics, and improve the accuracy of numerical simulation of seismic waves.
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Figure CN117094147B_ABST