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1.The method includes two main steps:to form cross-borehole supergathers by sorting gathers for dip layers,and to achieve the stacking and imaging of cross-borehole reflection waves by performing the scans of depth,dip angle and veIocity according to average amplitude energy rule.
它首先针对倾斜界面进行抽道集,形成井间的超道集,然后利用平均振幅能量准则进行深度、倾角和速度三重扫描,获得井间反射波叠加成像。收藏指正
2.Based on the similarity of common reflection point trace gathers in one coherent zone, CRS stack can focus more energy on the vicinity of the reflector, and therefore can obtain a high signal-to-noise ratio zero offset section by stacking events with the same phase.
共反射面叠加利用了邻近多个共反射点道集的相似性,提高了资料的覆盖次数,从而压制了随机噪声,增强反射波同相轴的连续性,大幅提高了地震资料的信噪比。收藏指正
3.To perform CRS stack depends on the determination of three wave attributes,compared with conventional common middle point(CMP) stack and dip move out(DMO) stack,CRS stack can focus more energy in the vicinity of the reflector,therefore can obtain a better zero offset section by stacking events with same phase.
共反射面元的旅行时响应由三个波场属性参数确定 ,相比常规共中心点 (commonmiddlepoin ,CMP)叠加和倾角时差校正 (dipmoveout,DMO)叠加 ,CRS叠加算子能够将地下反射点附近一个邻域内的能量进行聚焦并实现同相叠加 ,因此能得到更好的零炮检距剖面 .收藏指正
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