井间地震资料中纵波各向异性参数反演
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摘要
采用旅行时线性/二次联合插值射线追踪算法(QLTI算法)得到各向异性地层的P波井间层析成像旅行时,在地层垂向速度和各向异性参数反演中引入了小生境遗传算法,采用共享函数完成种群进化过程中个体的选择操作,更好地维护了种群中个体的多样性,在一定程度上能避免陷入局部极值。数值算例表明,该方法能细致地描述地层各向异性信息,反演精度高、稳定性好。多尺度联合反演使得小炮检距下也能得到精度较高的各向异性参数。
The Quadratic/Linear Traveltime Interpolation (QLTI) ray tracing method is adopted to get the P-wave traveltime of crosswell seismic tomography in this paper. The Niche Genetic Algorithm is applied to the inversion of vertical velocity and anisotropic parameters. The sharing function is used in the population evolutionary process to select the individuals, which can well maintain the individual variety and keep off trapping in local minima to some extent. The numerical simulation shows that the precise anisotropic parameters and high stabilization can be obtained by using this inversion method. The multi-scale inversion can improve the precision of inverted results even in short offset.
The Quadratic/Linear Traveltime Interpolation (QLTI) ray tracing method is adopted to get the P-wave traveltime of crosswell seismic tomography in this paper. The Niche Genetic Algorithm is applied to the inversion of vertical velocity and anisotropic parameters. The sharing function is used in the population evolutionary process to select the individuals, which can well maintain the individual variety and keep off trapping in local minima to some extent. The numerical simulation shows that the precise anisotropic parameters and high stabilization can be obtained by using this inversion method. The multi-scale inversion can improve the precision of inverted results even in short offset.
引文
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[3]羊屋三维处理、解释一体化方法研究组.纵波VTI介质理论与应用研究[J].石油地球物理勘探,2002,37(3):267~275.Research Group for3-D P processing and interpretation method.Research on P-wave theory in VTI media and its application[J].Oil Geophysical Prospecting,2002,37(3):267~275.(in Chinese)
[4]卢明辉,唐建侯.VTI介质P波非双曲时差分析[J].地球物理学进展,2005,20(2):328~331.Lu Minghui,Tang Jianhou.Analysis of P-wave nonhyperbolic reflection moveout in VTI media[J].Progress in Geophysics,2005,20(2):328~331.(in Chinese)
[5]朱培民,王家映.用纵波AVO数据反演储层裂隙密度参数[J].石油物探,2001,40(2):1~12.Zhu Peimin,Wang Jiaying.Inverting reservoir fracture density using P-wave AVO data[J].Geophysical Prospecting for Petroleum,2001,40(2):1~12.(in Chinese)
[6]陈世军,刘洪.井间地震技术的现状与展望[J].地球物理学进展,2003,18(3):524~529.Chen Shijun,Liu Hong.The current situation and prospect of crosswell seismic technique[J].Progress in Geophysics,2003,18(3):524~529.(in Chinese)
[7]谭桂华,聂建新.小生境遗传算法在井间走时地震层析成像中的应用[J].工程力学,2004,21(4):97~100.Tan Guihua,Nie Jianxin.Crosshole seismic velocity tomography based on niche genetic algorithms and QLTI[J].Engineering Mechanics,2004,21(4):97~100.(in Chinese)
[8]聂建新,杨顶辉,杨慧珠.基于非饱和多孔隙介质BISQ模型的储层参数反演[J].地球物理学报,2004,47(6):1101~1105.Nie Jianxin,Yang Dinghui,Yang Huizhu.Inversion of reservoir parameters based on the BISQ model in partially saturated porous media[J].Chinese Journal of Geophysics,2004,47(6):1101~1105.(in Chinese)
[9]聂建新,杨慧珠.地震波旅行时二次/线性联合插值法[J].清华大学学报(自然科学版),2003,43(11):1495~1498.Nie Jianxin,Yang Huizhu.Quadratic/linear traveltime interpolation of seismic ray-tracing[J].Journal of Tsinghua University,2003,43(11):1495~1498.(in Chinese)
[10]Asakawa E,Kawanaka T.Seismic ray tracing using linear traveltime interpolation[J].Geophysical Prospecting,1993,41(1):99~111.
[2]Bakulin A,Grechka V,Tsvinkin I.Estimation of fracture parameters from reflection seismic data-partⅠ,Ⅱ,Ⅲ[J].Geophysics,2000,65(6):1788~1830.
[3]羊屋三维处理、解释一体化方法研究组.纵波VTI介质理论与应用研究[J].石油地球物理勘探,2002,37(3):267~275.Research Group for3-D P processing and interpretation method.Research on P-wave theory in VTI media and its application[J].Oil Geophysical Prospecting,2002,37(3):267~275.(in Chinese)
[4]卢明辉,唐建侯.VTI介质P波非双曲时差分析[J].地球物理学进展,2005,20(2):328~331.Lu Minghui,Tang Jianhou.Analysis of P-wave nonhyperbolic reflection moveout in VTI media[J].Progress in Geophysics,2005,20(2):328~331.(in Chinese)
[5]朱培民,王家映.用纵波AVO数据反演储层裂隙密度参数[J].石油物探,2001,40(2):1~12.Zhu Peimin,Wang Jiaying.Inverting reservoir fracture density using P-wave AVO data[J].Geophysical Prospecting for Petroleum,2001,40(2):1~12.(in Chinese)
[6]陈世军,刘洪.井间地震技术的现状与展望[J].地球物理学进展,2003,18(3):524~529.Chen Shijun,Liu Hong.The current situation and prospect of crosswell seismic technique[J].Progress in Geophysics,2003,18(3):524~529.(in Chinese)
[7]谭桂华,聂建新.小生境遗传算法在井间走时地震层析成像中的应用[J].工程力学,2004,21(4):97~100.Tan Guihua,Nie Jianxin.Crosshole seismic velocity tomography based on niche genetic algorithms and QLTI[J].Engineering Mechanics,2004,21(4):97~100.(in Chinese)
[8]聂建新,杨顶辉,杨慧珠.基于非饱和多孔隙介质BISQ模型的储层参数反演[J].地球物理学报,2004,47(6):1101~1105.Nie Jianxin,Yang Dinghui,Yang Huizhu.Inversion of reservoir parameters based on the BISQ model in partially saturated porous media[J].Chinese Journal of Geophysics,2004,47(6):1101~1105.(in Chinese)
[9]聂建新,杨慧珠.地震波旅行时二次/线性联合插值法[J].清华大学学报(自然科学版),2003,43(11):1495~1498.Nie Jianxin,Yang Huizhu.Quadratic/linear traveltime interpolation of seismic ray-tracing[J].Journal of Tsinghua University,2003,43(11):1495~1498.(in Chinese)
[10]Asakawa E,Kawanaka T.Seismic ray tracing using linear traveltime interpolation[J].Geophysical Prospecting,1993,41(1):99~111.
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