Kirchhoff叠前时间偏移比常规偏移具有方法简单、运算速度快以及可操作性强,而且可以应用到2-D和3-D地震数据偏移成像。Kirchhoff叠前时间偏移是高频近似条件下的偏移算法,可以利用射线跟踪技术可以获得地震波旅行时间,沿着该射线路径传播的时间积分求和来实现偏移成像。由于射线跟踪算法适应于横向变速介质,因此,Kirchhoff叠前时间偏移也适应横向变速介质。我们将该方法应用于南阳油田复杂构造的成像,该区构造产状不仅陡,断层也多,偏移结果表明Kirchhoff叠前时间偏移在该区可以获得较好的地震成像效果. The Kirchhoff prestack time migration is easier, faster, and more maneuverable than conventional migration and can be applied to 2-D and 3-D seismic data migration imaging. The Kirchhoff prestack time migration is an offset algorithm in the high frequency approximation. The ray tracing technique can be used to obtain the travel time of the seismic wave, and the time integral summation of the propagation along the ray path to achieve the migration imaging. Due to the ray tracing algorithm adapted to transverse velocity media, the Kirchhoff prestack time migration also accommodates lateral velocity media. We apply this method to the imaging of complex structures in Nanyang Oilfield. The structural tectonics of this area are not only steep, but also faults. The migration results show that Kirchhoff prestack time migration can obtain good seismic imaging results in this area.