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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。
In general, the co-center point stacking profile, the offset homing time profile and the homing depth profile can be obtained from multiple seismic coverage observations. However, there are many problems with this method. For this reason, this paper presents a method of coplanar point stacking plus depth of field. This method is based on the fact that the depth of view from the point of centroids to the interface is an invariant to the seismic traces of the concentric point gathers. Which can make use of this feature for common center point gathers move correction, overlay and offset homing. This method overcomes the speed problem that the common center point superposition time profile method is hard to solve.