层析成像反演速度建模方法研究

Tomography Inversion Velocity Model Building Method Research

本文应用层析成像反演方法优化叠前深度偏移速度模型。阐述叠前深度偏移速度建模流程,详细介绍利用两种不同层析反演方法来优化深度域的层速度模型,对同一实际地震资料速度模型建立的应用效果表明,在资料信噪比较高的地区能提供准确解释层位信息的前提下,模型层析反演优化后的速度模型精度要比网格层析反演优化后的速度模型更高,且稳定性强。

In the paper, we propose an optimized tomography based velocity model building method for pre-stack depth migration. The flow of velocity model building method for pre-stack depth migration was described. Two different tomography velocity model building methods（model tomography and grid tomography） were discussed. Applications in the same seismic data indicate that： under the high S/N ratio areas and accurate interpretation layer information provided condition, Model tomography is more accurate and stable than grid tomography.