共反射面叠加在实际地震资料处理中的应用
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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。
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.
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.
引文
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[2]Hubral P,Hoecht G,Jaeger R.Seism ic illum ination[J].TheLead ing Edge,1999(11):1268.
[3]杨锴,王华忠,马在田.实现最佳零炮检距地震照明成像———CRS叠加之几何阐述[J].勘探地球物理进展,2002,25(3):27.
[4]杨锴,徐蔚亚,王华忠.基于模型数据的共反射面元叠加初步实践[J].同济大学学报,2003,31(3):309.
[5]王华忠,杨锴,马在田.共反射面元叠加的应用理论———从共反射点到共反射面元[J].地球物理学报,2004,47(1):137.
[6]杨锴,王华忠,马在田.共反射面元叠加的应用实践[J].地球物理学报,2004,47(2):327.
[7]谭未一,杨长春,李瑞忠,等.共反射面元叠加的实现途径及流程[J].地球物理学进展,2004,19(2):325.
[8]Schleicher J,Tygle M,Hubral P.Parabolic and hyperbolic paraxialtwo-point traveltim es in 3D m ed ia[J].Geophysical Prospecting,1993,41:495.
[9]Hubral P.Computing true amplitude reflections in a laterally inho-mogeneous earth[J].Geophysics,1983,48:1051.
[10]TygelM,Mu llerT,Hubral P,et al.E igenwave based mu ltiparam etertraveltim e expansions[A].67 th Annual Internat M tg,Soc ExplGeophys,Expanded Abstracts[C].Tu lsa:SEG,1997:1770.
[11]HochtG,deBazelaire E,Majer P,et al.Seism ics and Optics:hyper-bolae and curvatures[J].Journal of Applicied Geophysics,1999,42:261.
[12]Mann J,Jager R,Müller T,et al.Common-reflection-surfacestack———A real data example[J].Jouran l of Applied Geophys-ices,1999,42:301.
[2]Hubral P,Hoecht G,Jaeger R.Seism ic illum ination[J].TheLead ing Edge,1999(11):1268.
[3]杨锴,王华忠,马在田.实现最佳零炮检距地震照明成像———CRS叠加之几何阐述[J].勘探地球物理进展,2002,25(3):27.
[4]杨锴,徐蔚亚,王华忠.基于模型数据的共反射面元叠加初步实践[J].同济大学学报,2003,31(3):309.
[5]王华忠,杨锴,马在田.共反射面元叠加的应用理论———从共反射点到共反射面元[J].地球物理学报,2004,47(1):137.
[6]杨锴,王华忠,马在田.共反射面元叠加的应用实践[J].地球物理学报,2004,47(2):327.
[7]谭未一,杨长春,李瑞忠,等.共反射面元叠加的实现途径及流程[J].地球物理学进展,2004,19(2):325.
[8]Schleicher J,Tygle M,Hubral P.Parabolic and hyperbolic paraxialtwo-point traveltim es in 3D m ed ia[J].Geophysical Prospecting,1993,41:495.
[9]Hubral P.Computing true amplitude reflections in a laterally inho-mogeneous earth[J].Geophysics,1983,48:1051.
[10]TygelM,Mu llerT,Hubral P,et al.E igenwave based mu ltiparam etertraveltim e expansions[A].67 th Annual Internat M tg,Soc ExplGeophys,Expanded Abstracts[C].Tu lsa:SEG,1997:1770.
[11]HochtG,deBazelaire E,Majer P,et al.Seism ics and Optics:hyper-bolae and curvatures[J].Journal of Applicied Geophysics,1999,42:261.
[12]Mann J,Jager R,Müller T,et al.Common-reflection-surfacestack———A real data example[J].Jouran l of Applied Geophys-ices,1999,42:301.
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