稳定有效的反Q滤波方法
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摘要
反Q滤波是补偿大地吸收衰减有效方法之一,其稳定性和有效性是反Q滤波的前提条件。笔者研究了一种稳定的反Q滤波方法,并通过理论模型和实际数据与传统的增益限制反Q滤波方法进行了对比。结果表明:稳定反Q滤波更好地恢复了衰减的地震信号,并自动限制了对噪声的过渡放大。同时,还分析了噪声和增益限制因子Glim对稳定反Q滤波的影响。
The inverse Q filtering is one of the most effective method for tackling the earth attenuation.Stability and efficiency are two problems of general concern in inverse Q filtering.In this paper,a stabilized inverse Q filtering was implemented and compared with the conventional gain-limited inverse Q filtering by theoretical model and actual seismic data.The results show that the stabilized inverse Q filtering can recover effectively the attenuation of the seismic data and restrict intelligently the attempt to amplify the ambient noise.At the same time,the effects of noise level and specified gain limit Glim on the stabilized inverse Q filtering are also analyzed in this paper.
The inverse Q filtering is one of the most effective method for tackling the earth attenuation.Stability and efficiency are two problems of general concern in inverse Q filtering.In this paper,a stabilized inverse Q filtering was implemented and compared with the conventional gain-limited inverse Q filtering by theoretical model and actual seismic data.The results show that the stabilized inverse Q filtering can recover effectively the attenuation of the seismic data and restrict intelligently the attempt to amplify the ambient noise.At the same time,the effects of noise level and specified gain limit Glim on the stabilized inverse Q filtering are also analyzed in this paper.
引文
[1]李振春,王清振.地震波衰减机理及能量补偿研究综述[J].地球物理学进展,2007,22(4):1147-1152.
[2]白桦,李级鹏.基于时频分析的地层吸收补偿[J].石油地球物理勘探,1999,34(6):642-648.
[3]李鲲鹏,李衍达,张学工.基于小波包分解的地层吸收补偿[J].地球物理学报,2000,43(4):542-549.
[4]刘喜武,年静波,刘洪.基于广义S变换的吸收衰减补偿方法[J].石油物探,2006,45(1):9-14.
[5]高星,李维新,姚振兴.用于深度域地震剖面衰减与频散补偿的反Q滤波方法[J].地球物理学报,2003,46(2):229-233.
[6]刘财,刘洋,王典,等.一种频域吸收衰减补偿方法[J].石油物探,2005,40(2):116-119.
[7]凌云,高军,吴琳.时频空间域球面发散与吸收补偿[J].石油地球物理勘探,2005,40(2):176-182,189.
[8]Hale I D.Q2 adaptive deconvolution:stanford exploration project[R].Report Number 30,1982,133-158.
[9]Bickel S H,Natarajan R R.Plane-waveQdeconvolution[J].Geo-physics,1985,50:1426-1439.
[10]Hargreaves N D,Calvert A J.InverseQfiltering by Fourier trans-form[J].Geophysics,1991,56:519-527.
[11]裴江云,何樵登.基于Kjartansson模型的反Q滤波[J].地球物理学进展,1994,9(2):90-99.
[12]Wang Yanghua.InverseQ-filter for seismic resolution enhancement[J].Geophysics,2006,71(3):51-60.
[13]Wang Yanghua.A stable and efficient approach of inverseQfilte-ring[J].Geophysics,2002,67(2):657-663.
[14]王珺,杨长春,乔玉雷.用稳定高效的反Q滤波技术提高地震资料分辨率[J].地球物理学进展,2008,23(2):456-463.
[15]Wang Yanghua,Guo Jian.Modified Kolsky model for seismic atten-uation and dispersion[J].J Geophys Eng,2004:187-196.
[16]李合群,赵波,唐博文.Q吸收补偿应用研究[R].CPS/SEGBeijing 2009 International Geophysical Conference&Exposition,Beijing,2009.
[2]白桦,李级鹏.基于时频分析的地层吸收补偿[J].石油地球物理勘探,1999,34(6):642-648.
[3]李鲲鹏,李衍达,张学工.基于小波包分解的地层吸收补偿[J].地球物理学报,2000,43(4):542-549.
[4]刘喜武,年静波,刘洪.基于广义S变换的吸收衰减补偿方法[J].石油物探,2006,45(1):9-14.
[5]高星,李维新,姚振兴.用于深度域地震剖面衰减与频散补偿的反Q滤波方法[J].地球物理学报,2003,46(2):229-233.
[6]刘财,刘洋,王典,等.一种频域吸收衰减补偿方法[J].石油物探,2005,40(2):116-119.
[7]凌云,高军,吴琳.时频空间域球面发散与吸收补偿[J].石油地球物理勘探,2005,40(2):176-182,189.
[8]Hale I D.Q2 adaptive deconvolution:stanford exploration project[R].Report Number 30,1982,133-158.
[9]Bickel S H,Natarajan R R.Plane-waveQdeconvolution[J].Geo-physics,1985,50:1426-1439.
[10]Hargreaves N D,Calvert A J.InverseQfiltering by Fourier trans-form[J].Geophysics,1991,56:519-527.
[11]裴江云,何樵登.基于Kjartansson模型的反Q滤波[J].地球物理学进展,1994,9(2):90-99.
[12]Wang Yanghua.InverseQ-filter for seismic resolution enhancement[J].Geophysics,2006,71(3):51-60.
[13]Wang Yanghua.A stable and efficient approach of inverseQfilte-ring[J].Geophysics,2002,67(2):657-663.
[14]王珺,杨长春,乔玉雷.用稳定高效的反Q滤波技术提高地震资料分辨率[J].地球物理学进展,2008,23(2):456-463.
[15]Wang Yanghua,Guo Jian.Modified Kolsky model for seismic atten-uation and dispersion[J].J Geophys Eng,2004:187-196.
[16]李合群,赵波,唐博文.Q吸收补偿应用研究[R].CPS/SEGBeijing 2009 International Geophysical Conference&Exposition,Beijing,2009.
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