【摘要】 介绍了基于等效偏移距的共散射点道集成像方法。该方法分3步实现:①共散射点道集的形成;②共散射点道集速度分析;③对共散射点道集进行克希霍夫积分偏移。煤层气二维地震实际数据散射成像与常规偏移方法的测试处理对比表明:散射成像有利于提高低信噪比地震数据的偏移归位精度和小断层的成像效果。更多还原

【Abstract】 Introduced a scattered-wave imaging method based on the common scattered point(CSP) gathers of equivalent offset.The method consists of three steps:first is forming CSP gathers;second is velocity analysis on CSP gathers;third is applying Kirchhoff migration on CSP gathers.Real 2D CBM seismic data test processing in scattered-wave image and conventional migration method show that scattered-wave imaging benefits to low signal-to-noise seismic data imaging,and it can get better migration profiles and small faults imaging.更多还原