三维单程波照明在胡庆-赵庄采集施工中的应用

3D one-wave illumination in Huqing-Zhaozhuang seismic acquisition Application

单程波照明相对于双程波照明具有信噪比高和计算速度快的优点,在地震采集施工中,通过对工区地球物理模型进行三维单程波照明统计分析可以找到针对目的层位的地面最佳的激发范围。针对采集物理点发生大量位移的复杂地表区三维地震采集施工,在三维速度建模的基础上,分析三维观测系统在主要目的层照明能量的分布来优选变观设计方案,从而实现对炮检点合理优化。该技术在胡庆-赵庄高精度采集施工中的应用表明,三维单程波照明分析技术有效的减少了施工设计的盲目性,极大的提高了采集质量。

One-way wave equation has many advantages than two-way wave equation in seismic illumination analysis technology,for example,high calculating efficiency and high S/N.The optimal source positions are determined through 3Done-way illumination statistical method during the 3Dseismic acquisition.We can determine the optimal one from several operation schemes by the analysis of uniformity of illumination energy in the area which acquired physical point has large displacement of the 3Dseismic acquisition operation.The technique was used in Huqing- Zhaozhuang field operation show that it reduced the blindness ofthe field operation design and improved the acquisition quality greatly.