一种基于空间域伪差分算子的VTI介质纯qP波正演模拟方法
By converting the qP-wave equation into a modified pseudo-difference operator and using a convolution kernel library and staggered mesh finite difference method, the high cost and artifact problems of qP-wave simulation in VTI media are solved, and high-precision simulation results are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA UNIV OF PETROLEUM (EAST CHINA)
- Filing Date
- 2023-05-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for simulating qP waves in vertically and laterally isotropic (VTI) media suffer from high solution costs, computational complexity, and a tendency to produce shear wave artifacts, making them difficult to apply in actual seismic exploration.
The pure qP wave equation is transformed into an elliptic anisotropic equation containing a modified pseudo-difference operator. The pseudo-difference operator is approximated using a convolution kernel, a convolution kernel library is established, and the elliptic anisotropic equation is solved directly through staggered grid finite difference, avoiding Fourier transform.
It achieves high-precision qP-wave simulation, reduces computational costs, avoids shear wave artifacts, is suitable for parallel computation of domain decomposition, and is applicable to actual seismic exploration.
Smart Images
Figure CN116663351B_ABST