频率域拉东变换加权约束反演压制层间多次波
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摘要
松辽盆地拗陷期地层的多个强反射界面产生大量层间多次波,降低了地震成像的振幅保真度和垂向分辨率,影响中深层目标储层的预测精度。有效压制多次波是提高地震成像品质的重要环节,本文研究应用频率域拉东变换加权约束反演方法,实现层间多次波的叠前压制。"两宽一高"地震数据和测井资料的多次波分析表明,研究区多次波的数量多、阶次高、周期不同、能量各异,且多次波之间以及多次波与一次波干涉叠加,致使多次波的叠前时距特征不明显,有效压制难度大。在动校正后的CDP道集上,采用频率域抛物线拉东变换实现多次波与一次波快速分离;加权约束反演重构多次波,解决小炮检距多次波重构及有限炮检距引起的拉东域能量模糊现象;由实际地震道自适应减去重构的多次波,避免损伤有效信号。叠前压制层间多次波提高了研究区地震成像的振幅保真度和垂向分辨率,有利于薄层砂体预测。
Middle and deep targets in Songliao Basin are strongly influenced by peg-leg multiples generated from strong reflection interfaces,which decrease the amplitude fidelity and vertical resolution in the seismic imaging.Based on 3D seismic and logging data analysis,many multiples are characterized by more orders,various periods,and energy variation.Multiples are overlapped each other,and even with primary,which leads it difficult to be suppressed.Therefore we propse a peg-leg multiple suppression with the weight-constrain inversion of Radon transform in the frequency domain.First on CDP gathers after NMO,multiples are separated from primaries with parabola Radon transform in the frequency domain.Then multiples are reconstructed by the weight-constrain inversion,which decreases energy smear in the Radon domain caused by limited offset.Finally multiples are suppressed on seismic data with adaptive subtraction.Our applications show that the proposed algorithm achives better amplitude fidelity and vertical resolution,which is very helpful for reservoir prediction.
Middle and deep targets in Songliao Basin are strongly influenced by peg-leg multiples generated from strong reflection interfaces,which decrease the amplitude fidelity and vertical resolution in the seismic imaging.Based on 3D seismic and logging data analysis,many multiples are characterized by more orders,various periods,and energy variation.Multiples are overlapped each other,and even with primary,which leads it difficult to be suppressed.Therefore we propse a peg-leg multiple suppression with the weight-constrain inversion of Radon transform in the frequency domain.First on CDP gathers after NMO,multiples are separated from primaries with parabola Radon transform in the frequency domain.Then multiples are reconstructed by the weight-constrain inversion,which decreases energy smear in the Radon domain caused by limited offset.Finally multiples are suppressed on seismic data with adaptive subtraction.Our applications show that the proposed algorithm achives better amplitude fidelity and vertical resolution,which is very helpful for reservoir prediction.
引文
[1]赵翰卿.大庆油田精细储层沉积学研究.北京:石油工业出版社,2012,103-110.
[2]杜金虎,赵泽辉,焦贵浩等.松辽盆地中生代火山岩优质储层控制因素及分布预测.中国石油勘探,2012,17(4):1-8.Du Jinhu,Zhao Zehui,Jiao Guihao et al.Controlling factors and distribution prediction of high-quality reservoir of Mesozoic volcanic rocks in Songliao Basin.China Petroleum Exploration,2012,17(4):1-8.
[3]张常久.徐家围子断陷沙河子组砂砾岩储层特征及主控因素.大庆石油地质与开发,2014,33(2):22-26.Zhang Changjiu.Characteristics and main controlling factors for the glutenite reservoir of Shahezi formation in Xujiaweizi fault depression.Petroleum Geology and Oilfield Development in Daqing,2014,33(2):22-26.
[4]陈志德,赵忠华,王成.黏滞声学介质地震波吸收补偿叠前时间偏移方法.石油地球物理勘探,2016,51(2):325-333.Chen Zhide,Zhao Zhonghua,Wang Cheng.Prestack time migration with compensation for absorption of viscous-elastic media.OGP,2016,51(2):325-333.
[5]Rob Simm,Mike Bacon著;高建虎,李胜军,马龙等译.地震振幅解释与应用.北京:石油工业出版社,2015,207-221.
[6]侯启军,冯志强,冯子辉等.松辽盆地陆相石油地质学.北京:石油工业出版社,2009,129-194.
[7]黄饶,陈小宏,李景叶.层间多次波模拟与影响分析.地球物理学进展,2009,24(3):981-988.Huang Rao,Chen Xiaohong,Li Jingye.Simulation and effect analysis of interbed multiples.Progress in Geophysics,2009,24(3):981-988.
[8]Verschuur D J著;陈浩林,张宝庆,刘军等译.地震多次波去除技术的过去、现在和未来.山东东营:中国石油大学出版社,2014,13-28.
[9]高瑞褀,蔡希源.松辽盆地油气田形成条件与分布规律.北京:石油工业出版社,1997,47-64.
[10]Kabir M M N,Murfurt K J.Toward true amplitude multiple removal.The Leading Edge,1999,18(1):66-73.
[11]陈志德,刘振宽,李成斌.三维叠前深度偏移速度分析及蒙特卡洛自动层速度拾取.地球物理学报,2002,45(2):246-254.Chen Zhide,Liu Zhenkuan,Li Chengbin.3Dprestack depth migration velocity analysis and automatic Monte Carlo velocity picking in depth.Chinese Journal of Geophysics,2002,45(2):246-254.
[12]Schonewille M A,Duijndam A J.Efficient nonuniform Fourier and Radon filtering and reconstruction.SEGTechnical Program Expanded Abstracts,1998,17:1692-1695.
[13]Cary P.The simplest discrete Radon transform.SEGTechnical Program Expanded Abstracts,1998,17:1999-2002.
[14]Sacchi M D,Porsani M.Fast high resolution parabolic Radon transform.SEG Technical Program Expanded Abstracts,1999,18:1477-1480.
[15]Hugonnet P,Hermmann P,Ribeiro C.High resolution Radon:a review.Extended Abstracts of 63rd EAGEConference&Exhibition,2001,IM-2.
[16]朱生旺,魏修成,李锋等.用抛物线Radon变换稀疏解分离和压制多次波.石油地球物理勘探,2002,37(2):110-115.Zhu Shengwang,Wei Xiucheng,Li Feng et al.Separating and suppressing multiples by sparse solution of parabolic Radon transform.OGP,2002,37(2):110-115.
[17]刘伊克,常旭,王辉等.波路径偏移压制层间多次波的理论与应用.地球物理学报,2008,51(2):589-595.Liu Yike,Chang Xu,Wang Hui et al.Internal multiple removal and its application by wavepath migration.Chinese Journal of Geophysics,2008,51(2):589-595.
[18]Hampson D.Inverse velocity stacking for multiple elimination.Canadian Journal of Exploration Geophysicists,1986,22(1):44-55.
[19]Thorson J R,Claerbout J F.Velocity stack and slant stochastic inversion.Geophysics,1985,50(12):2727-2741.
[20]Sacchi M D,Ulrych T J.High-resolution velocity gathers and offset space reconstruction.Geophysics,1995,60(4):1169-1177.
[21]巩向博,韩立国,王升超.混合域高分辨率双曲Radon变换及其在多次波压制中的应用.石油物探,2016,55(5):711-718.Gong Xiangbo,Han Liguo,Wang Shengchao.Highresolution hyperbolic Radon transform and its application in multiple suppression.GPP,2016,55(5):711-718.
[22]谭军,宋鹏,李金山等.基于同相轴追踪的三维地震资料多次波压制方法.石油地球物理勘探,2017,52(5):894-905.Tan Jun,Song Peng,Li Jinshan et al.3Dmultiple suppression based on event tracing.OGP,2017,52(5):894-905.
[23]Kelamis P G,Chiburis E F.Land data examples of Radon multiple suppression.First Break,1992,10(7):275-280.
[24]Herrmann P,Mojesky T,Magesan M et al.De-aliased,high-resolution Radon transforms.SEG Technical Program Expanded Abstracts,2000,19:1953-1956.
[25]Moore I,Kostov C.Stable,Efficient,high-resolution Radon transforms.Extended Abstracts of 64th EA-GE Conference&Exhibition,2002,F034.
[26]范景文,李振春,宋翔宇等.各向异性高分辨率Radon变化压制多次波.石油地球物理勘探,2016,51(4):665-669.Fan Jingwen,Li Zhenchun,Song Xiangyu et al.Multiple attenuation with anisotropic high-resolution Radon transform.OGP,2016,51(4):665-669.
[27]张军华.地震资料去噪方法---原理、算法、编程及应用.山东东营:中国石油大学出版社,2011,82-93.
[28]Koehler F,Taner M T.The user of conjugate-gradient algorithms in the computation of predictive deconvolution operators.Geophysics,1985,50(12):2752-2758.
[2]杜金虎,赵泽辉,焦贵浩等.松辽盆地中生代火山岩优质储层控制因素及分布预测.中国石油勘探,2012,17(4):1-8.Du Jinhu,Zhao Zehui,Jiao Guihao et al.Controlling factors and distribution prediction of high-quality reservoir of Mesozoic volcanic rocks in Songliao Basin.China Petroleum Exploration,2012,17(4):1-8.
[3]张常久.徐家围子断陷沙河子组砂砾岩储层特征及主控因素.大庆石油地质与开发,2014,33(2):22-26.Zhang Changjiu.Characteristics and main controlling factors for the glutenite reservoir of Shahezi formation in Xujiaweizi fault depression.Petroleum Geology and Oilfield Development in Daqing,2014,33(2):22-26.
[4]陈志德,赵忠华,王成.黏滞声学介质地震波吸收补偿叠前时间偏移方法.石油地球物理勘探,2016,51(2):325-333.Chen Zhide,Zhao Zhonghua,Wang Cheng.Prestack time migration with compensation for absorption of viscous-elastic media.OGP,2016,51(2):325-333.
[5]Rob Simm,Mike Bacon著;高建虎,李胜军,马龙等译.地震振幅解释与应用.北京:石油工业出版社,2015,207-221.
[6]侯启军,冯志强,冯子辉等.松辽盆地陆相石油地质学.北京:石油工业出版社,2009,129-194.
[7]黄饶,陈小宏,李景叶.层间多次波模拟与影响分析.地球物理学进展,2009,24(3):981-988.Huang Rao,Chen Xiaohong,Li Jingye.Simulation and effect analysis of interbed multiples.Progress in Geophysics,2009,24(3):981-988.
[8]Verschuur D J著;陈浩林,张宝庆,刘军等译.地震多次波去除技术的过去、现在和未来.山东东营:中国石油大学出版社,2014,13-28.
[9]高瑞褀,蔡希源.松辽盆地油气田形成条件与分布规律.北京:石油工业出版社,1997,47-64.
[10]Kabir M M N,Murfurt K J.Toward true amplitude multiple removal.The Leading Edge,1999,18(1):66-73.
[11]陈志德,刘振宽,李成斌.三维叠前深度偏移速度分析及蒙特卡洛自动层速度拾取.地球物理学报,2002,45(2):246-254.Chen Zhide,Liu Zhenkuan,Li Chengbin.3Dprestack depth migration velocity analysis and automatic Monte Carlo velocity picking in depth.Chinese Journal of Geophysics,2002,45(2):246-254.
[12]Schonewille M A,Duijndam A J.Efficient nonuniform Fourier and Radon filtering and reconstruction.SEGTechnical Program Expanded Abstracts,1998,17:1692-1695.
[13]Cary P.The simplest discrete Radon transform.SEGTechnical Program Expanded Abstracts,1998,17:1999-2002.
[14]Sacchi M D,Porsani M.Fast high resolution parabolic Radon transform.SEG Technical Program Expanded Abstracts,1999,18:1477-1480.
[15]Hugonnet P,Hermmann P,Ribeiro C.High resolution Radon:a review.Extended Abstracts of 63rd EAGEConference&Exhibition,2001,IM-2.
[16]朱生旺,魏修成,李锋等.用抛物线Radon变换稀疏解分离和压制多次波.石油地球物理勘探,2002,37(2):110-115.Zhu Shengwang,Wei Xiucheng,Li Feng et al.Separating and suppressing multiples by sparse solution of parabolic Radon transform.OGP,2002,37(2):110-115.
[17]刘伊克,常旭,王辉等.波路径偏移压制层间多次波的理论与应用.地球物理学报,2008,51(2):589-595.Liu Yike,Chang Xu,Wang Hui et al.Internal multiple removal and its application by wavepath migration.Chinese Journal of Geophysics,2008,51(2):589-595.
[18]Hampson D.Inverse velocity stacking for multiple elimination.Canadian Journal of Exploration Geophysicists,1986,22(1):44-55.
[19]Thorson J R,Claerbout J F.Velocity stack and slant stochastic inversion.Geophysics,1985,50(12):2727-2741.
[20]Sacchi M D,Ulrych T J.High-resolution velocity gathers and offset space reconstruction.Geophysics,1995,60(4):1169-1177.
[21]巩向博,韩立国,王升超.混合域高分辨率双曲Radon变换及其在多次波压制中的应用.石油物探,2016,55(5):711-718.Gong Xiangbo,Han Liguo,Wang Shengchao.Highresolution hyperbolic Radon transform and its application in multiple suppression.GPP,2016,55(5):711-718.
[22]谭军,宋鹏,李金山等.基于同相轴追踪的三维地震资料多次波压制方法.石油地球物理勘探,2017,52(5):894-905.Tan Jun,Song Peng,Li Jinshan et al.3Dmultiple suppression based on event tracing.OGP,2017,52(5):894-905.
[23]Kelamis P G,Chiburis E F.Land data examples of Radon multiple suppression.First Break,1992,10(7):275-280.
[24]Herrmann P,Mojesky T,Magesan M et al.De-aliased,high-resolution Radon transforms.SEG Technical Program Expanded Abstracts,2000,19:1953-1956.
[25]Moore I,Kostov C.Stable,Efficient,high-resolution Radon transforms.Extended Abstracts of 64th EA-GE Conference&Exhibition,2002,F034.
[26]范景文,李振春,宋翔宇等.各向异性高分辨率Radon变化压制多次波.石油地球物理勘探,2016,51(4):665-669.Fan Jingwen,Li Zhenchun,Song Xiangyu et al.Multiple attenuation with anisotropic high-resolution Radon transform.OGP,2016,51(4):665-669.
[27]张军华.地震资料去噪方法---原理、算法、编程及应用.山东东营:中国石油大学出版社,2011,82-93.
[28]Koehler F,Taner M T.The user of conjugate-gradient algorithms in the computation of predictive deconvolution operators.Geophysics,1985,50(12):2752-2758.