正演模拟技术在地震解释中的应用

Forward Seismic Modeling Technology in the Application of Interpretation

对地质模型进行波场正演计算可以模拟地震波在地下介质中的传播规律,以明确地质体地震记录特征.在地震资料解释过程中,对地质模型的正演计算可以对解释结果进行验证,并能提供地下地质体地震波岩石物理响应特性,为地质学家正确研究地下地质环境提供地震波波场证据。本文介绍了利用交错网格差分思想求解波动方程的地震正演模拟方法,并在碳酸盐地层中层位判断和相对低速薄灰岩储层中的两个实际地质模型为例进行简要分析。

The geological model of the wave field forward calculation can simulate seismic waves in the ground of the transmission medium in order to identify the characteristics of seismic records of geological body. In the process of seismic interpretation, the geological forward modeling from the results of the calculation can be Verified, and underground geo- logical body petrophysical seismic response characteristics, as geologists study the ground floor of the right geological environment to provide evidence of seismic wave field. This pa- per describes the use of the ideological difference staggered grid to solve the seismic wave e- quation forward modeling methods ,and makes a brief analysis of the forward simulation a- bout some applications in the Carbonate stratigraphy seismic interpretation and limestone reservoir with a relative low seismic Velocity and a thinner thickness.