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共反射面叠加在实际地震资料处理中的应用
THE APPLICATION OF COMMON REFLECTION SURFACE STACK TO REAL SEISMIC DATA PROCESSING
【摘要】 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。
【Abstract】 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.
【关键词】 零偏移距;
共反射面叠加;
地震资料处理;
参数优化;
【Key words】 zero offset; common reflection surface stack; seismic data processing; parameters optimization;
【Key words】 zero offset; common reflection surface stack; seismic data processing; parameters optimization;
- 【文献出处】 物探与化探 ,Geophysical and Geochemical Exploration , 编辑部邮箱 ,2006年04期
- 【分类号】P631.443
- 【被引频次】5
- 【下载频次】103