SRME技术在澳大利亚Timer Sea地区的应用
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摘要
表面多次波压制(SRME)技术是目前应用效果较好的多次波衰减技术。在介绍多次波类型和常见压制方法的基础上,引出SRME方法。基于平面波传播模型讨论SRME技术的基本原理,以及针对实际地震数据的迭代预测和减去方法,结合该技术的特点给出实际地震数据应用流程。澳大利亚Timer Sea地区海洋地震资料应用实例表明SRME这种数据驱动的表面多次波压制方法非常实用,尤其对崎岖海底多次波有显著效果。
Surface-related Multiple Elimination(SRME) is one of the most advanced technologies in multiple elimination.Beginning with classification of multiple reflections and introduction of the elimination methods,principle of SRME based on the plane-wave propagation model for a horizontally layered earth was discussed,and then the iterative procedure of the prediction and subtraction of the surface related multiples in real seismic data was described.According to the properties of SRME,necessary pre-processing is pointed out for practical application.An example of SRME on 2D seismic data from Timer Sea,Australia,demonstrated that this data-driven multiple elimination approach is very effective,especially for the multiples from the irregular water bottom topography.
Surface-related Multiple Elimination(SRME) is one of the most advanced technologies in multiple elimination.Beginning with classification of multiple reflections and introduction of the elimination methods,principle of SRME based on the plane-wave propagation model for a horizontally layered earth was discussed,and then the iterative procedure of the prediction and subtraction of the surface related multiples in real seismic data was described.According to the properties of SRME,necessary pre-processing is pointed out for practical application.An example of SRME on 2D seismic data from Timer Sea,Australia,demonstrated that this data-driven multiple elimination approach is very effective,especially for the multiples from the irregular water bottom topography.
引文
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[2]Verschuur D J.Seismic multiple removal techniques:past,pre-sent and future[M].EAGE Publications BV,2006.
[3]Arthur B Weglein.Multiple attenuation:an overview of recentadvances and the road ahead[J].The Leading Edge,1999,18(1):40-44.
[4]Robinson E A.Predictive decomposition of seismic traces[J].Geophysics,1957,22(4):767-778.
[5]Berryhill J R,Kim Y C.Deep-water peg legs and multiples:Emulation and suppression[J].Geophysics,1986,51(12):2177-2184.
[6]Verschuur D J,Berkhout A J,Wapenaar C P A.Adaptive sur-face-related multiple elimination[J].Geophysics,1992,57(9):1166-1177.
[7]Berkhout A J,Verschuur D J.Estimation of multiple scatteringby iterative inversion,Part I:Theoretical considerations[J].Geophysics,1997,62(5):1586-1595.
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