共反射面叠加在实际地震资料处理中的应用

共反射面叠加方法运用3个地震波场参数来描述地下反射面元时距关系,不对地下反射界面形状做任何假设,并且是一种不依赖于宏观速度模型的反射波成像方法。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。通过在实际地震资料处理中的应用,证明了该方法的这些特性。

THE APPLICATION OF COMMON REFLECTION SURFACE STACK TO REAL SEISMIC DATA PROCESSING

Common reflection surface(CRS) stack,which depends on three attributes of the seismic wave-field,is a seismic imaging method independent of the macro-model.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.The effectiveness and practicability of the method have been proved by applying it to the real seismic data.