海上地震资料处理中的组合压制多次波技术
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摘要
本文针对澳大利亚海上地震资料中全程多次波和层间多次波发育的特点,分析了各类多次波压制方法的优缺点,提出了针对该区海上地震资料多次波压制策略:①在第一次速度分析后应用Radon变换压制大部分全程多次波;②应用预测反褶积压制大部分层间多次波;③在第二次速度分析后,应用高精度Radon变换压制剩余多次波;④在叠前偏移CRP道集上应用Radon变换和内切除压制小时差层间多次波。应用上述组合方式可以有效地压制多次波,突出一次有效反射波。
This paper presents a multiple attenuation approach for Australian marine seismic data.In view of long path and peg-leg multiples significantly growing,comparisons of different multiple attenuation methods are made and the strategies of combined multiple suppression are proposed.The steps of multiple attenuation shows as follows: ①Radon transform is performed after the first round of velocity analysis to attenuate most of the long-path multiples.②Predictive deconvolution is used to attenuate most of the peg-leg multiples.③High precision Radon transform is performed after the second round of velocity analysis to attenuate residual multiples.④Radon transform plus inner mute is performed on CPR gathers to suppress peg-leg multiples with small time differences.The results prove the efficiency of this combined approach.Primary reflections are improved.
This paper presents a multiple attenuation approach for Australian marine seismic data.In view of long path and peg-leg multiples significantly growing,comparisons of different multiple attenuation methods are made and the strategies of combined multiple suppression are proposed.The steps of multiple attenuation shows as follows: ①Radon transform is performed after the first round of velocity analysis to attenuate most of the long-path multiples.②Predictive deconvolution is used to attenuate most of the peg-leg multiples.③High precision Radon transform is performed after the second round of velocity analysis to attenuate residual multiples.④Radon transform plus inner mute is performed on CPR gathers to suppress peg-leg multiples with small time differences.The results prove the efficiency of this combined approach.Primary reflections are improved.
引文
[1]李鹏,刘伊克,常旭等.多次波问题的研究进展.地球物理学进展,2006,21(3):888～897 Li Peng,Liu Yike,Chang Xu et al.Progress on the multiple problems.Progress in Geophysics,2006,21(3):888～897
[2]徐文君,於文辉,卞爱飞.地震资料多次波处理.工程地球物理学报,2005,2(6):417～424 Xu Wenjun,Yu Wenhui,Bian Aifei.Multiple atte-nuation in seismic data processing.Chinese Journal of Engineering Geophysics,2005,2(6):417～424
[3]胡天跃,王润秋,温书亮.聚束滤波法消除海上地震资料的多次波.石油地球物理勘探,2002,37(1):18～23 Hu Tianyue,Wang Runqiu,Wen Shuliang.Multiple attenuation of seismic data from South China Sea by using beam-forming filtering method.OGP,2002,37(1):18～23
[4]渥.伊尔马滋.地震数据处理.北京:石油工业出版社,1994,379～386
[5]Treitel S,Lines L R.Linear inverse theory and de-convolution.Geophysics,1982,47(8):1153～1159
[6]刘喜武,刘洪,李幼铭.高分辨率Radon变换方法及其在地震信号处理中的应用.地球物理学进展,2004,19(1):8～25 Liu Xiwu,Liu Hong,Li Youming.High resolutionradon transform and its application in seismic signal processing.Progress in Geophysics,2004,19(1):8～25
[7]Bishop K et al.Investigation of Vendor demultiple technology for complex subsalt geology.SEG Tech-nical Program Expanded Abstracts,2001,20:1273～1276
[8]Matson K et al.Inverse scattering internal multiple attenuation:results from complex synthetic and field data examples.SEG Technical Program Expanded Abstracts,1999,18:1060～1063
[9]Paffenholz J et al.Subsalt multiple attenuation and imaging:Observations from the sigsbee2Bsynthetic dataset.SEG Technical Program Expanded Ab-stracts,2002,21:2122～2125
[10]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,Shen Cao,Huang Xinwu.Progress in multiple attenuation techniques based on wave equa-tion.Progress in Geophysics,2002,17(3):480～485
[11]Peacock K L,Treitel S.Predictive deconvolution-the-ory and practices.Geophysics,1969,34(2):155～169
[12]李振春,张军华.地震数据处理方法.山东东营:中国石油大学出版社,2004
[13]Foster D J,Mosher C C.Suppression of multiple re-flection using the Radon transform.Geophysics,1992,57(3):386～395
[14]梁丽敏.地震多次波压制方法技术应用研究.石油仪器,2006,20(4):68～70
[15]李丽青,梁蓓雯,徐华宁.海上单道地震资料中多次波的衰减.石油物探,2007,46(5):457～462 Li Liqing,Liang Beiwen,Xu Huaning.Multiple at-tenuation for marine single-channel seismic data.GPP,2007,46(5):457～462
[16]姚征,顾汉明,段洪友等.提高泌阳凹陷深层系地震资料多次波压制效果的举措.工程地球物理学报,2006,3(5):370～374 Yao Zheng,Gu Hanming,Duan Hongyou et al.The method of improving the effect of seismic multiple at-tenuation for deep layer in Biyang depression.Chinese Journal of Engineering Geophysics,2006,3(5):370～374
[17]候志强,高顺莉.西湖凹陷重点构造的精细处理及其效果分析.中国海上油气(地质),2003,17(1):74～78 Hou Zhiqiang,Gao Shunli.Refined seismic process-ing and its result analysis for main structures in Xihu sag,east China sea basin.China Offshore Oil and Gas(Geology),2003,17(1):74～78
[2]徐文君,於文辉,卞爱飞.地震资料多次波处理.工程地球物理学报,2005,2(6):417～424 Xu Wenjun,Yu Wenhui,Bian Aifei.Multiple atte-nuation in seismic data processing.Chinese Journal of Engineering Geophysics,2005,2(6):417～424
[3]胡天跃,王润秋,温书亮.聚束滤波法消除海上地震资料的多次波.石油地球物理勘探,2002,37(1):18～23 Hu Tianyue,Wang Runqiu,Wen Shuliang.Multiple attenuation of seismic data from South China Sea by using beam-forming filtering method.OGP,2002,37(1):18～23
[4]渥.伊尔马滋.地震数据处理.北京:石油工业出版社,1994,379～386
[5]Treitel S,Lines L R.Linear inverse theory and de-convolution.Geophysics,1982,47(8):1153～1159
[6]刘喜武,刘洪,李幼铭.高分辨率Radon变换方法及其在地震信号处理中的应用.地球物理学进展,2004,19(1):8～25 Liu Xiwu,Liu Hong,Li Youming.High resolutionradon transform and its application in seismic signal processing.Progress in Geophysics,2004,19(1):8～25
[7]Bishop K et al.Investigation of Vendor demultiple technology for complex subsalt geology.SEG Tech-nical Program Expanded Abstracts,2001,20:1273～1276
[8]Matson K et al.Inverse scattering internal multiple attenuation:results from complex synthetic and field data examples.SEG Technical Program Expanded Abstracts,1999,18:1060～1063
[9]Paffenholz J et al.Subsalt multiple attenuation and imaging:Observations from the sigsbee2Bsynthetic dataset.SEG Technical Program Expanded Ab-stracts,2002,21:2122～2125
[10]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,Shen Cao,Huang Xinwu.Progress in multiple attenuation techniques based on wave equa-tion.Progress in Geophysics,2002,17(3):480～485
[11]Peacock K L,Treitel S.Predictive deconvolution-the-ory and practices.Geophysics,1969,34(2):155～169
[12]李振春,张军华.地震数据处理方法.山东东营:中国石油大学出版社,2004
[13]Foster D J,Mosher C C.Suppression of multiple re-flection using the Radon transform.Geophysics,1992,57(3):386～395
[14]梁丽敏.地震多次波压制方法技术应用研究.石油仪器,2006,20(4):68～70
[15]李丽青,梁蓓雯,徐华宁.海上单道地震资料中多次波的衰减.石油物探,2007,46(5):457～462 Li Liqing,Liang Beiwen,Xu Huaning.Multiple at-tenuation for marine single-channel seismic data.GPP,2007,46(5):457～462
[16]姚征,顾汉明,段洪友等.提高泌阳凹陷深层系地震资料多次波压制效果的举措.工程地球物理学报,2006,3(5):370～374 Yao Zheng,Gu Hanming,Duan Hongyou et al.The method of improving the effect of seismic multiple at-tenuation for deep layer in Biyang depression.Chinese Journal of Engineering Geophysics,2006,3(5):370～374
[17]候志强,高顺莉.西湖凹陷重点构造的精细处理及其效果分析.中国海上油气(地质),2003,17(1):74～78 Hou Zhiqiang,Gao Shunli.Refined seismic process-ing and its result analysis for main structures in Xihu sag,east China sea basin.China Offshore Oil and Gas(Geology),2003,17(1):74～78
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