阿曼Amal区块地震数据中复杂多次波的分析与压制
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摘要
本文以阿曼Amal区块陆上三维地震资料为例,介绍在地震数据处理中识别陆上多次波的几种方法,即从CMP道集数据的自相关、速度谱、叠加剖面、等时切片等多方面综合研究多次波的特征。在此基础上,在叠前选择聚束滤波方法压制多次波,改善速度谱的质量,确保能够获得一次反射波的速度;在叠后采用局域多道相干滤波法衰减残存的多次波,取得明显效果。
Taking land 3D seismic data in Block Amal in Oman as an example,this paper mainly describes some methods for multiples recognition such as autocorrelations of CMP gather,velocity spectrum,stack section and time slices to study multiple characteristics.Based on the above discussion,we choose the beam-forming filtering to attenuate multiples in the pre-stack processing.In this way the quality of velocity spectrum is improved,and the velocity of primary reflection is obtained.In the post-stack stage,the local multi-traces coherent filtering method is used to attenuate remnant multiples.Application results of 3D seismic data in Block Amal in Oman prove the efficiency of the approach.
Taking land 3D seismic data in Block Amal in Oman as an example,this paper mainly describes some methods for multiples recognition such as autocorrelations of CMP gather,velocity spectrum,stack section and time slices to study multiple characteristics.Based on the above discussion,we choose the beam-forming filtering to attenuate multiples in the pre-stack processing.In this way the quality of velocity spectrum is improved,and the velocity of primary reflection is obtained.In the post-stack stage,the local multi-traces coherent filtering method is used to attenuate remnant multiples.Application results of 3D seismic data in Block Amal in Oman prove the efficiency of the approach.
引文
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[2]Weglein A.Multiple attenuation:an overview of re-cent advances and the road ahead.The Leading Edge,1999,18(1):40～44
[3]Arthur B et al.Multiple attenuation:recent advances and the road ahead.The Leading Edge,2011,30(8):864～875
[4]Herrmann P,Mojesky T and Hugonnet P.Dealiased high-resolution Radon transforms.SEG Technical Program Expanded Abstracts,2000,19:1953～1956
[5]Ethan J Nowak and Matthias G Imhof.Amplitude preservation of Radon-based multiple-removal filters.Geophysics,2006,71(5):123～126
[6]Spitz S.Model-based subtraction of multiple events in the frequency space domain.SEG Technical Pro-gram Expanded Abstracts,2000,19:1969～1972
[7]Berkhout A J and Verschuur D J.Estimation of multi-ple scatting by iterative inversion,Part I:Theoretical considerations.Geophysics,1997,62(5):1586～1595
[8]张金强,牟永光.多次波压制的自适应方法.石油地球物理勘探,2002,37(3):209～215 Zhang Jinqiang and Mou Yongguang.A self-adaptive method for multiple suppression.OGP,2002,37(3):209～215
[9]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
[10]王汝珍.多次波识别与衰减.勘探地球物理进展,2003,26(5-6):423～431 Wang Ruzhen.Recognition and suppression of multi-ple waves.Progress in Exploration Geophysics,2003,26(5-6):423～431
[11]Lancaster S.Targeted deconvolution for optimal mul-tiple attenuation.SEG Technical Program Expand-ed Abstracts,2005,24:2091～2095
[12]张军华,缪彦舒,郑旭刚等.预测反褶积去除多次波的几个理论问题的探讨.油气地球物理,2008,6(3):15～19 Zhang Junhua,Miao Yanshu,Zheng Xugang et al.Discuss of several theoretical questions using predic-tive deconvolution to remove multipule.Petroleum Geophysics,2008,6(3):15～19
[13]王正军,方长江.地震资料处理中对多次波的分析和压制.新疆石油天然气,2009,5(3):25～27 Wang Zhengjun,Fang Changjiang.The analysis and suppression of multiples in seismic data processing.Xinjiang Oil&Gas,2009,5(3):25～27
[14]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 attenua-tion in seismic data processing.Chinese Journal of Engineering Geophysics,2005,2(6):417～424
[15]White R E.A multichannel method of multiple atten-uation based on hyperbolic moveout curves.50th EAEG Meeting,Extended Abstracts,Hague,1988,1～22
[16]洪菲,胡天跃,王润秋.利用三维聚束滤波方法消除相关噪声.石油地球物理勘探,2005,40(1):42～47 Hong Fei,Hu Tianyue,Wang Runqiu.Using3D beamforming filtering method to eliminate coherent noise.OGP,2005,40(1):42～47
[17]洪菲,胡天跃,张文坡,刘东奇.用优化聚束滤波方法消除低信噪比地震资料中的多次波.地球物理学报,2004,47(6):1106～1110 Hong Fei,Hu Tianyue,Zhang Wenbo,Liu Dongqi Attenuating multiple for low signal to noise ratio seis-mic data using optional beamforming.Chinese Jour-nal of Geophysics,2004,47(6):1106～1110
[18]Panos G Kelamis and Verschuur D J.Surface-related multiple elimination on land seismic data:Strategies via case studies.Geophysics,2000,65(3):719～734
[19]Louis M Houston.Multiple suppression using a local coherence filter.Geophysics,1998,63(2):652～659
[2]Weglein A.Multiple attenuation:an overview of re-cent advances and the road ahead.The Leading Edge,1999,18(1):40～44
[3]Arthur B et al.Multiple attenuation:recent advances and the road ahead.The Leading Edge,2011,30(8):864～875
[4]Herrmann P,Mojesky T and Hugonnet P.Dealiased high-resolution Radon transforms.SEG Technical Program Expanded Abstracts,2000,19:1953～1956
[5]Ethan J Nowak and Matthias G Imhof.Amplitude preservation of Radon-based multiple-removal filters.Geophysics,2006,71(5):123～126
[6]Spitz S.Model-based subtraction of multiple events in the frequency space domain.SEG Technical Pro-gram Expanded Abstracts,2000,19:1969～1972
[7]Berkhout A J and Verschuur D J.Estimation of multi-ple scatting by iterative inversion,Part I:Theoretical considerations.Geophysics,1997,62(5):1586～1595
[8]张金强,牟永光.多次波压制的自适应方法.石油地球物理勘探,2002,37(3):209～215 Zhang Jinqiang and Mou Yongguang.A self-adaptive method for multiple suppression.OGP,2002,37(3):209～215
[9]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
[10]王汝珍.多次波识别与衰减.勘探地球物理进展,2003,26(5-6):423～431 Wang Ruzhen.Recognition and suppression of multi-ple waves.Progress in Exploration Geophysics,2003,26(5-6):423～431
[11]Lancaster S.Targeted deconvolution for optimal mul-tiple attenuation.SEG Technical Program Expand-ed Abstracts,2005,24:2091～2095
[12]张军华,缪彦舒,郑旭刚等.预测反褶积去除多次波的几个理论问题的探讨.油气地球物理,2008,6(3):15～19 Zhang Junhua,Miao Yanshu,Zheng Xugang et al.Discuss of several theoretical questions using predic-tive deconvolution to remove multipule.Petroleum Geophysics,2008,6(3):15～19
[13]王正军,方长江.地震资料处理中对多次波的分析和压制.新疆石油天然气,2009,5(3):25～27 Wang Zhengjun,Fang Changjiang.The analysis and suppression of multiples in seismic data processing.Xinjiang Oil&Gas,2009,5(3):25～27
[14]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 attenua-tion in seismic data processing.Chinese Journal of Engineering Geophysics,2005,2(6):417～424
[15]White R E.A multichannel method of multiple atten-uation based on hyperbolic moveout curves.50th EAEG Meeting,Extended Abstracts,Hague,1988,1～22
[16]洪菲,胡天跃,王润秋.利用三维聚束滤波方法消除相关噪声.石油地球物理勘探,2005,40(1):42～47 Hong Fei,Hu Tianyue,Wang Runqiu.Using3D beamforming filtering method to eliminate coherent noise.OGP,2005,40(1):42～47
[17]洪菲,胡天跃,张文坡,刘东奇.用优化聚束滤波方法消除低信噪比地震资料中的多次波.地球物理学报,2004,47(6):1106～1110 Hong Fei,Hu Tianyue,Zhang Wenbo,Liu Dongqi Attenuating multiple for low signal to noise ratio seis-mic data using optional beamforming.Chinese Jour-nal of Geophysics,2004,47(6):1106～1110
[18]Panos G Kelamis and Verschuur D J.Surface-related multiple elimination on land seismic data:Strategies via case studies.Geophysics,2000,65(3):719～734
[19]Louis M Houston.Multiple suppression using a local coherence filter.Geophysics,1998,63(2):652～659
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