Rapid VSP ray tracing calculation method for high and steep mountain structure
A technology of ray tracing and calculation method, which is applied in seismic signal processing, seismology for logging records, etc., can solve the problems that the calculation efficiency of ray tracing method cannot meet the needs of production, the amount of calculation is huge, and the surface fluctuation is large. Achieve the effects of stable computing performance, avoiding ray computing, and efficient organization
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[0052] Due to the existence of high, steep and complex geological structures in the mountains, there are multiple rays between each offset pair. Aiming at the special scene of VSP processing and imaging, the present invention proposes a VSP fast ray tracing technology for complex geological structures in high and steep mountains.
[0053]The basic principle of VSP ray tracing is that the ray starts from the source point and propagates underground along the initial ray direction. According to the known model structure, when the ray encounters the interface, the ray is transmitted according to the Snell theorem, the ray parameters remain unchanged, and the ray direction changes. When When encountering the target interface, the ray is reflected according to the Snell theorem, the ray propagates upward, and ends when the ray reaches the position of the geophone, completing a test launch tracking. Due to the existence of high and steep undulating structures in the mountains, there ...
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