逆数据域表面多次波压制方法
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摘要
基于波动方程压制表面多次波的反馈迭代方法,推导出压制表面多次波的逆数据域方法。该方法利用了一次波和表面多次波在逆数据域的可分离性质。含表面多次波的地震数据变换到逆数据域后,表面多次波的能量在逆数据域形成能量聚焦区域,可通过简单切除能量聚焦区域的信号实现表面多次波压制,避免了基于波动方程预测减去方法中的自适应相减过程,完全损伤不到一次波的能量。单道地震记录和合成炮数据模型试算表明:逆数据域多次被压制方法简单易行,可有效压制表面多次波,并保持一次波振幅不受损失。与常规的基于波动方程的表面多次被压制方法(SRME方法)对比表明,逆数据域方法能更好地应对有效波和多次波同相轴相交的情况。
Based on wave equation,inverse data method is induced from feedback iteration method to attenuate surface-related multiples,which uses the separation properties between primaries and multiples in inverse data domain.After transforming seismic data with multiples to inverse data domain,multiples energy is focused in some area.Attenuating surface-related multiples in inverse data domain can be realized by muting the focus energy simply,which avoiding adaptive fitting subtraction during prediction and subtraction based on wave equation,and primaries energy can not be harmed.Single trace seismic record and synthetic shot data model tests show that inverse data method is simple and applicable,which can attenuate surface-related multiples effectively,also maintain primaries well.Comparing with conventional SRME method show that inverse data method can cope with intercept events between primaries and multiples well.
Based on wave equation,inverse data method is induced from feedback iteration method to attenuate surface-related multiples,which uses the separation properties between primaries and multiples in inverse data domain.After transforming seismic data with multiples to inverse data domain,multiples energy is focused in some area.Attenuating surface-related multiples in inverse data domain can be realized by muting the focus energy simply,which avoiding adaptive fitting subtraction during prediction and subtraction based on wave equation,and primaries energy can not be harmed.Single trace seismic record and synthetic shot data model tests show that inverse data method is simple and applicable,which can attenuate surface-related multiples effectively,also maintain primaries well.Comparing with conventional SRME method show that inverse data method can cope with intercept events between primaries and multiples well.
引文
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[15]马继涛,Sen M K,陈小宏.平面波域反数据处理压制多次波方法研究[J].地球物理学报,2009,52(3):808-816.MA Ji-tao,Sen M K,CHEN Xiao-hong.Multipleattenuation using inverse data processing in the plane-wave domain[J].Chinese Journal of Geophysics,2009,52(3):808-816.
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[17]Luo Y,Zhu W,Kelamis P G.Internal multiple redu-ction in inverse-data domain[C]//SEG ExpandedAbstracts.San Antonio:[s.n.],2007.
[2]杨宝俊,李月,刘晓华,等.改善地震勘探记录的4项技术[J].吉林大学学报:地球科学版,2006,36(5):857-862.YANG Bao-jun,LI Yue,LIU Xiao-hua,et al.Fourprocessing techniques for improving the seismicprospecting records[J].Journal of Jilin University:Earth Science Edition,2006,36(5):857-862.
[3]巩向博,韩立国,王恩利,等.压制噪声的高分辨率Radon变换法[J].吉林大学学报:地球科学版,2009,39(1):152-157.GONG Xiang-bo,HAN Li-guo,WANG En-li,et al.Denoising via high resolution Radon transform[J].Journal of Jilin University:Earth Science Edition,2009,39(1):152-157.
[4]Verschuur D J,Berkhout A J.Adaptive surface-related multiple elimination[J].Geophysics,1992,57(9):1166-1177.
[5]Verschuur D J,Berkhout A J.Estimation of multiplescattering by iterative inversion,partⅡ:practicalaspects and examples[J].Geophysics,1997,62(5):1596-1611.
[6]Berkhout A J,Verschuur D J.Estimation of multiplescattering by iterative inversion,part I:theoreticalconsiderations[J].Geophysics,1997,62(5):1586-1595.
[7]金德刚,常旭,刘伊克.逆子波域消除多次波方法研究[J].地球物理学报,2008,51(1):250-259.JIN De-gang,CHANG Xu,LIU Yi-ke.Research ofmultiple elimination method in inverse wavelet domain[J].Chinese Journal of Geophysics,2008,51(1):250-259.
[8]Wang Y.Multiple subtraction using an expandedmultichannel matching filter[J].Geophysics,2003,68(1):346-354.
[9]Lu W,Liu L.Adaptive multiple subtraction based onconstrained independent component analysis[J].Geophysics,2005,70(1):1-7.
[10]Fomel S.Adaptive multiple subtraction using regu-larized nonstationary regression[J].Geophysics,2005,70(1):25-33.
[11]Berkhout A J.Seismic processing in the inverse dataspace[J].Geophysics,2006,71(4):29-33.
[12]Berkhout A J.Seismic migration,imaging of acousticenergy by wave field extrapolation,part B:practicalaspects[M].Amsterdam:Elsevier SciencesPublishing Company,1984.
[13]Berkhout A J,Verschuur D J.Estimation of multiplescattering by iterative inversion,partⅠ:theoreticalconsiderations[J].Geophysics,1997,62(5):1586-1595.
[14]Berkhout A J,Verschuur D J.Seismic processing inthe inverse data space,removal of surface-related andinternal multiples[C]//EAEG 69th Conference&Exhibition.London:[s.n.],2007.
[15]马继涛,Sen M K,陈小宏.平面波域反数据处理压制多次波方法研究[J].地球物理学报,2009,52(3):808-816.MA Ji-tao,Sen M K,CHEN Xiao-hong.Multipleattenuation using inverse data processing in the plane-wave domain[J].Chinese Journal of Geophysics,2009,52(3):808-816.
[16]Ma J,Sen M K,Chen X.Free-surface multiple atte-nuation using inverse data processing in the coupledplane-wave domain[J].Geophysics,2009,74(4):75-81.
[17]Luo Y,Zhu W,Kelamis P G.Internal multiple redu-ction in inverse-data domain[C]//SEG ExpandedAbstracts.San Antonio:[s.n.],2007.
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