转换横波动态网格有限差分正演模拟方法、装置、设备及介质
By optimizing the geophysical parameter model through dynamic grid partitioning and finite difference wave equations, the problem of low computational efficiency in converted shear wave forward modeling is solved, achieving efficient and high-precision converted shear wave seismic wavefield simulation and reducing computational costs.
CN120065318BActive Publication Date: 2026-07-17CHINA NAT OFFSHORE OIL CORP +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA NAT OFFSHORE OIL CORP
- Filing Date
- 2025-02-24
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing technologies suffer from low computational efficiency and severe numerical dispersion in forward modeling of converted shear waves, making it difficult to achieve both high accuracy and high efficiency.
Method used
The converted shear wave dynamic grid finite difference forward modeling method is adopted. By using dynamic grid partitioning and finite difference wave equations, the geophysical parameter model is optimized to perform efficient and high-precision converted shear wave seismic wave field simulation.
Benefits of technology
It significantly improves computational efficiency and reduces computer memory usage while maintaining the accuracy of forward modeling, making it suitable for seismic data processing.
✦ Generated by Eureka AI based on patent content.
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Figure CN120065318B_ABST
Abstract
本发明公开一种转换横波动态网格有限差分正演模拟方法、装置、设备及介质，包括：设置正演模拟参数，输入地球物理参数模型；对输入的地球物理参数模型进行动态网格剖分处理，获得网格优化后的地球物理参数模型；采用网格优化后的地球物理参数模型，基于转换横波动态网格有限差分波动方程进行转换横波有限差分数值模拟；按照预先设置的观测系统参数，基于转换横波动态网格有限差分波动方程在检波点处记录转换横波振幅，得到正演模拟的转换横波地震记录。因此，本发明能够保持正演模拟波场精度方面几乎不受影响，可以广泛应用于地震资料数据处理中。
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