共中心点叠加视深度剖面法

通常，由多次覆盖地震观测资料可以得到共中心点叠加剖面、偏移归位时间剖面和归位深度剖面。然而，这种方法存在许多问题，为此，本文提出了一种共中心点叠加视深度剖面法。该法是以共中心点到界面的视深度对于共中心点道集内各地震道是一个不变量为基础的。从而可以利用这个特性进行共中心点道集的动校正、叠加和偏移归位。这种方法克服了共中心点叠加时间剖面法难以解决的速度问题。

CMP stacking apparent depth section

CDP seismic data can be used to produce CMP stacked time section, migrated time section and migrated depth section; are some inherent problems in the process. A new however, there method, CMP stacking apparent depth section method, is put forward。It is based on the assumption that in a CMP gather all the CMP apparent depths for a. given reflector are same. We can therefore use this property in accomplishing dynamic correction, stacking and migration of CMP gather. This new method helps to solve the velocity problem which can hardly be settled by CMP stacking section method.