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直接寻找油气藏的地球物理方法包括对地震时间、速度和振幅异常的研究。通常把静校正和动校正理解为在正常的地震资料处理过程中的对反射到达时所作的校正。速度分析可靠性极大地取决于消除地表时间异常所算出的静校正的准确性。同样,地震剖面上出现的振幅异常的准确性也取决于消除表层影响的效果。本文介绍了一种计算振幅校正的方法。举出了用于说明这种方法的海上和陆上资料的例子。
Geophysical methods that directly look for reservoirs include the study of anomalies in seismic time, velocity, and amplitude. Static correction and dynamic correction are often understood as corrections made when reflections arrive during normal seismic data processing. The reliability of velocity analysis greatly depends on the accuracy of the static correction calculated by eliminating the surface anomalies. Similarly, the accuracy of the amplitude anomalies appearing in seismic sections also depends on the effect of eliminating surface effects. This article describes a method of calculating amplitude correction. Examples of marine and land-based data used to illustrate this method are given.