陆地多次反射折射波定量分析
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摘要
多次反射折射波在东部油田盆地隆起区、南方碳酸盐岩山区和西北地区山前带多有发育。通过相关公式推导探讨多次反射折射波的性质,分析其运动学和动力学特性,针对地震数据处理实际,研究其对振幅补偿、反褶积效果的影响,并用特征向量滤波方法对多次反射折射波进行衰减。实际处理资料结果表明,特征向量滤波方法适于衰减多次反射折射波,衰减后的地震记录构造成像更清楚。
Multiple reflected refractions are prevailing at uplift of basin,southern mountain carbonate area and piedmont tectonic belt of the west region.The characteristics of multiple reflected refraction including the kinematic and dynamic characteristics were discussed by the related formula derivations.Subsequently,the effects of such interference on amplitude compensation and deconvolution in the seismic data processing flow were also studied.Eigenvector filter multiple attenuation method was used for the attenuation of such noise.The seismic data processing results show that eigenvector filter multiple attenuation method is suitable for the attenuation of such noise and the seismic data after attenuation make imaging profiles of the structure more clear.
Multiple reflected refractions are prevailing at uplift of basin,southern mountain carbonate area and piedmont tectonic belt of the west region.The characteristics of multiple reflected refraction including the kinematic and dynamic characteristics were discussed by the related formula derivations.Subsequently,the effects of such interference on amplitude compensation and deconvolution in the seismic data processing flow were also studied.Eigenvector filter multiple attenuation method was used for the attenuation of such noise.The seismic data processing results show that eigenvector filter multiple attenuation method is suitable for the attenuation of such noise and the seismic data after attenuation make imaging profiles of the structure more clear.
引文
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[2]李庆忠.论地震次生干扰[J].石油地球物理勘探,1983,18(4):296-297.LI Qing-zhong.On seismic secondary noises[J].Oil Ge-ophysical Prospecting,1983,18(4):296-297.
[3]陆基孟.地震勘探原理[M].东营:石油大学出版社,2006.
[4]SHERIFFL R E,GELDART L P.Exploration seismology[M].Cambridge:Cambridge University Press,1995:261-263.
[5]BREKHOVSKIKH L M.Waves in layered media[M].New York:Academic Press,1960.
[6]RAVINDRA V Cerveny.Theory of seismic head waves[M].Toronto:University of Toronto Press,1971.
[7]TURHAN Taner.Multi-component edge detection algo-rithm[R].Houston:Rock Solid Images,1999.
[8]凌云,高军.时频空间域球面发散与吸收补偿[J].石油地球物理勘探,2005,40(2):176-177.LING Yun,GAO Jun.Compensation for spherical disper-sion and absorption in time frequency spaced omain[J].Oil Geophysical Prospecting,2005,40(2):176-177.
[9]李振春.地震数据处理方法[M].东营:中国石油大学出版社,2004:70-76.
[10]YILMAZ O Z.Seismic data analysis[M].Tulsa:Socie-ty of Exploration Geophysicists,2001.
[11]Osvaldo de Oliveira Duarte.Predictive deconvolutionwith additive noise[J].SEG Expanded Abstracts,1992,11:1149-1151.
[12]HEMON C H,MACE D.Use of the Karhunen Loevetransformation in seismic data processing[J].Geophysi-cal Prospecting,1978,26:600-626.
[13]JONES I F.Applications of the Karhunen-Loeve trans-form in reflection seismic processing[D].Vancouver:University of British Columbia,1985.
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