叠前时间偏移技术及应用效果

Prestack Time Migration Technology And Its Application

叠前时间偏移处理是地震资料常规处理的发展趋势,它对构造复杂和横向速度变化剧烈地区地震偏移成像有较好的效果。本文以煤矿生产勘探中遇到的实际情况为例,阐述了此法的基本原理和实现步骤,并与其他常规处理方法进行对比。叠前时间偏移方法具有处理速度快、成像精度高的优点,能够较好解决大倾角目的层的地震成像问题,也增加了解释成果的可靠性和准确度,效果优于常规处理成果。

Prestack time migration processing is the development trend of seismic data processing, it has a better effect on complicated structure and severe lateral velocity variations of seismic migration imaging. Based on the actual situation of coal ,nine production encountered during exploration as an example, expounds the basic principle and steps of this method,and compared with other conventional processing method.Prestack time migration method has advantages of fast speed,high precision,and can better solve the problem of large dip angle seismic imaging of target layer. also increases the reliability of interpretation results and accuracy,effect is better than that of conventional treatment results.