【摘要】 静校正一直是地震资料处理中的一个关键环节。常规的静校正方法是基于地表一致性假设条件,但效果不明显,本文通过对水平层状介质下的理论静校正量的计算公式推导,分析了实际静校正量与近地表速度、厚度及反射界面深度和接收偏移距之间的关系。基于水平层状介质模型和基岩出露的典型山地模型,比较了理论静校正量和常规方法计算的静校正量之间的差异,阐述了进行非地表一致性静校正的必要性。通过对典型地区的实际资料采用地表一致性静校正方法和非地表一致性静校正方法进行处理后的叠加效果进行分析,结果表明采用非地表一致性静校正方法才能够更好地成像。更多还原

【Abstract】 Static correction is a key link in seismic data processing.Conventional static correction method is based on the surface consistency hypothesis,but the effect is not obvious.Through deriving the theoretical calculation formula of static correction in horizontal layered medium,this papar analyzes the actual static correction relationship between the velocity of near surface,the depth,the reflection interface and the receiving offset.By using a horizontal layered medium model and a bedrock exposed typical mountainous model,we contrasted the static correction difference between the theoretical static correction and the conventional calculation method,and explained the necessity of surface inconsistency statics.Finally,after taking the method of surface-consistent static correction and surface inconsistent static correction to process the actual data of typical area,and analyzing the effect after stack,we found that the imaging of surface-consistent static correction is much better.更多还原