τ-p域水体模型驱动压制浅水区水层多次波
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摘要
在近海油气地震勘探中,压制在海面及海底之间的短周期水层多次波一直是海洋地震资料处理的难点,传统上采用预测反褶积或SRME压制此类多次波存在很大局限性。因此,本文提出了一种τ-p域水体模型驱动压制浅水区水层多次波方法,该方法在τ-p域用已知水层参数(水速和水深)构建初始模型,并利用波场延拓方法来预测水层多次波模型,然后采用自适应相减从原始数据消除多次波。通过理论模型试算和实际数据应用,表明此法能有效压制浅水区水层多次波。
To attenuate shallow-water-layer multiples between the sea surface and the ocean bottom remains a difficulty of marine seismic processing.Conventional methods such as predictive deconvolution and SRME,have significant limitations.We propose in this paper a new method for removing this kind of multiples,called model-driven shallow-water-layer multiple attenuation. We first build an initial model in domain with water velocity and depth,and then predict shallow water-layer multiple with wavelength continuation method.Finally we attenuate multiples from seismic data with self-adaption subtraction.Both model tests and real data processing show that the proposed method can attenuate shallow-water-layer multiples.
To attenuate shallow-water-layer multiples between the sea surface and the ocean bottom remains a difficulty of marine seismic processing.Conventional methods such as predictive deconvolution and SRME,have significant limitations.We propose in this paper a new method for removing this kind of multiples,called model-driven shallow-water-layer multiple attenuation. We first build an initial model in domain with water velocity and depth,and then predict shallow water-layer multiple with wavelength continuation method.Finally we attenuate multiples from seismic data with self-adaption subtraction.Both model tests and real data processing show that the proposed method can attenuate shallow-water-layer multiples.
引文
[1]渥·伊尔马滋著;刘怀山,王克斌,童思友等译.地震资料分析—地震资料处理、反演和解释.北京:石油工业出版社,2006,1-508.
[2]张兴岩,朱江梅,杨薇等.海洋多次波组合压制技术及应用.物探与化探,2011,35(4):511-515.Zhang Xingyan,Zhu Jiangmei,Yang Wei et al.Group technology of antimultiple in marine seismic data processing and its application.Geophysical&Geochemical Exploration,2011,35(4):511-515.
[3]王汝珍.多次波识别与衰减.勘探地球物理进展,2003,26(6):423-425.Wang Ruzhen.Recognition and suppression of multiple waves.Progress in Exploration Geophysics,2003,26(6):423-425.
[4]刘振,张军华,韩双等.与界面有关的层间多次波预测及压制.石油地球物理勘探,2014,49(1):61-67.Liu Zhen,Zhang Junhua,Han Shuang et al.Layer related interbed multiple elimination.OGP,2014,49(1):61-67.
[5]张军华,王要森,郑旭刚等.海上地震资料多次波特征分析.石油地球物理勘探,2009,44(5):574-577.Zhang Junhua,Wang Yaosen,Zheng Xugang et al.Offshore seismic data multiple character analysis.OGP,2009,44(5):574-577.
[6]Berkhout A J,Verschuur D J.Imaging of multiple reflections.Geophysics,2006,71(4):SI209-SI220.
[7]Robinson E A.Predictive decomposition of seismic traces.Geophysics,1957,22(4):767-778.
[8]王彦春,段云卿.用褶积形式计算零偏移距VSP合成记录.石油地球物理勘探,1993,28(2):212-218.Wang Yanchun,Duan Yunqing.Computing zero offset VSP synthetic record by using convolution.OGP,1993,28(2):212-218.
[9]王彦春,段云卿.用神经网络进行自适应反褶积.江汉石油学院学报,1995,(3):31-34.Wang Yanchun,Duan Yunqing.Adaptive deconvolution based on neural network.Journal of Jianghan Petroleum Institute,1995,(3):31-34.
[10]张军华,缪彦舒,郑旭刚等.预测反褶积去多次波几个理论问题探讨.物探化探计算技术,2009,31(1):6-10.Zhang Junhua,Miao Yanshu,Zheng Xugang et al.Several theoretical issues of de-multiple iscussed by using predictive deconvolution.Computing Technologies for Geophysical and Geochemical Exploration,2009,31(1):6-10.
[11]李宏图,黄志,李振勇等.三维SRME技术及其在深海资料处理中的应用.石油地球物理勘探,2009,44(增刊1):60-62.Li Hongtu,Huang Zhi,Li Zhenyong et al.The application of 3DSRME in deep water seismic data processing.OGP,2009,44(S1):60-62.
[12]牛滨华,沈操,黄新武.波动方程多次波压制技术的进展.地球物理学进展,2002,17(3):480-485.Niu Binhua,Sheng Cao,Huang Xinwu.The progress of attenuation multiple using wave equation method.Progress in Geophysics,2002,17(3):480-485.
[13]马继涛,Sen K M,陈小宏等.海底电缆多次波压制方法研究.地球物理学报,2011,54(11):2960-2966.Ma Jitao,Sen K M,Chen Xiaohong et al.OBC multiple attenuation technique using SRME theory.Chinese Journal of Geophysics,2011,54(11):2960-2966.
[14]李东升,帕提幔.利用波动方程预测减去法压制海洋地震资料中的多次波.石油地球物理勘探,2007,42(增刊):58-60.Li Dongsheng,Pa Timan.Attenuation marine multiple using predictive subtraction method of wave equation.OGP,2007,42(S):58-60.
[15]刘清林,何樵登.Tau-p变换与Tau-p域偏移.石油地球物理勘探,1988,23(2):171-187.Liu Qingling,He Qiaodeng.Tau-p transform and migration in Tau-p domain.OGP,1988,23(2):171-187.
[16]李鹏.复杂介质多次波处理方法研究[学位论文].北京:中国科学院地质与地球物理研究所,2007,125-201.
[17]李键,王修田.炮集域压制海水鸣震的τ-p变换法.中国海洋大学学报,2008,38(1):121-124.Li Jian,Wang Xiutian.Suppression multiple on shot domuin using transformation method.Periodical of Ocean University of China,2008,38(1):121-124.
[2]张兴岩,朱江梅,杨薇等.海洋多次波组合压制技术及应用.物探与化探,2011,35(4):511-515.Zhang Xingyan,Zhu Jiangmei,Yang Wei et al.Group technology of antimultiple in marine seismic data processing and its application.Geophysical&Geochemical Exploration,2011,35(4):511-515.
[3]王汝珍.多次波识别与衰减.勘探地球物理进展,2003,26(6):423-425.Wang Ruzhen.Recognition and suppression of multiple waves.Progress in Exploration Geophysics,2003,26(6):423-425.
[4]刘振,张军华,韩双等.与界面有关的层间多次波预测及压制.石油地球物理勘探,2014,49(1):61-67.Liu Zhen,Zhang Junhua,Han Shuang et al.Layer related interbed multiple elimination.OGP,2014,49(1):61-67.
[5]张军华,王要森,郑旭刚等.海上地震资料多次波特征分析.石油地球物理勘探,2009,44(5):574-577.Zhang Junhua,Wang Yaosen,Zheng Xugang et al.Offshore seismic data multiple character analysis.OGP,2009,44(5):574-577.
[6]Berkhout A J,Verschuur D J.Imaging of multiple reflections.Geophysics,2006,71(4):SI209-SI220.
[7]Robinson E A.Predictive decomposition of seismic traces.Geophysics,1957,22(4):767-778.
[8]王彦春,段云卿.用褶积形式计算零偏移距VSP合成记录.石油地球物理勘探,1993,28(2):212-218.Wang Yanchun,Duan Yunqing.Computing zero offset VSP synthetic record by using convolution.OGP,1993,28(2):212-218.
[9]王彦春,段云卿.用神经网络进行自适应反褶积.江汉石油学院学报,1995,(3):31-34.Wang Yanchun,Duan Yunqing.Adaptive deconvolution based on neural network.Journal of Jianghan Petroleum Institute,1995,(3):31-34.
[10]张军华,缪彦舒,郑旭刚等.预测反褶积去多次波几个理论问题探讨.物探化探计算技术,2009,31(1):6-10.Zhang Junhua,Miao Yanshu,Zheng Xugang et al.Several theoretical issues of de-multiple iscussed by using predictive deconvolution.Computing Technologies for Geophysical and Geochemical Exploration,2009,31(1):6-10.
[11]李宏图,黄志,李振勇等.三维SRME技术及其在深海资料处理中的应用.石油地球物理勘探,2009,44(增刊1):60-62.Li Hongtu,Huang Zhi,Li Zhenyong et al.The application of 3DSRME in deep water seismic data processing.OGP,2009,44(S1):60-62.
[12]牛滨华,沈操,黄新武.波动方程多次波压制技术的进展.地球物理学进展,2002,17(3):480-485.Niu Binhua,Sheng Cao,Huang Xinwu.The progress of attenuation multiple using wave equation method.Progress in Geophysics,2002,17(3):480-485.
[13]马继涛,Sen K M,陈小宏等.海底电缆多次波压制方法研究.地球物理学报,2011,54(11):2960-2966.Ma Jitao,Sen K M,Chen Xiaohong et al.OBC multiple attenuation technique using SRME theory.Chinese Journal of Geophysics,2011,54(11):2960-2966.
[14]李东升,帕提幔.利用波动方程预测减去法压制海洋地震资料中的多次波.石油地球物理勘探,2007,42(增刊):58-60.Li Dongsheng,Pa Timan.Attenuation marine multiple using predictive subtraction method of wave equation.OGP,2007,42(S):58-60.
[15]刘清林,何樵登.Tau-p变换与Tau-p域偏移.石油地球物理勘探,1988,23(2):171-187.Liu Qingling,He Qiaodeng.Tau-p transform and migration in Tau-p domain.OGP,1988,23(2):171-187.
[16]李鹏.复杂介质多次波处理方法研究[学位论文].北京:中国科学院地质与地球物理研究所,2007,125-201.
[17]李键,王修田.炮集域压制海水鸣震的τ-p变换法.中国海洋大学学报,2008,38(1):121-124.Li Jian,Wang Xiutian.Suppression multiple on shot domuin using transformation method.Periodical of Ocean University of China,2008,38(1):121-124.
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