一种同时反演纵波速度和泊松比的方法
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摘要
本文提出一种角度部分叠加资料同时反演纵波速度和泊松比的方法.以角度部分叠加资料为基础,利用地震波振幅随入射角变化与弹性参数间的数学关系,基于非线性最优化理论,通过将最小平方问题转化为大型带状矩阵的求解问题,采用测井约束逐道外推技术依次求得该角度剖面每个点的纵波和泊松比值.通过由每个角度叠加剖面反演得到的相应角度范围的纵波速度和泊松比剖面的对比分析,进一步得到地震波垂直入射时的纵波速度和泊松比,为地震资料的岩性及含气性解释提供丰富的参数信息.
The method put forward in the paper is partial stack P-wave velocity and poisson ratio inversion simultaneously, using the mathematics relationship between the seismic wave amplitude versus incidence angle and elastic parameters, basing on the theory of nonlinear optimization, through converting the minimum square problem into the problem of large band matrix solution. Through analyzing the P-wave velocity and poisson ratio velumes inverted from every partial stack, P-wave velocity and poisson ratio at normal incidance can be obtained. So parameters ase available for lithologic interpretation and oil-gas bearing analysis.
The method put forward in the paper is partial stack P-wave velocity and poisson ratio inversion simultaneously, using the mathematics relationship between the seismic wave amplitude versus incidence angle and elastic parameters, basing on the theory of nonlinear optimization, through converting the minimum square problem into the problem of large band matrix solution. Through analyzing the P-wave velocity and poisson ratio velumes inverted from every partial stack, P-wave velocity and poisson ratio at normal incidance can be obtained. So parameters ase available for lithologic interpretation and oil-gas bearing analysis.
引文
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[13]刘斌,席道瑛,葛宁洁,等.不同围压下岩石中泊松比的各向异性[J].地球物理学报,2002,45(6):880～890.
[14]王子煜.库车坳陷西部中新生代地层岩石物理和力学性质[J].地球物理学进展.2002,17(3):399～405.
[15]桂志先,朱广生,雷克辉.砂岩泊松比垂向变化差异分析[J].江汉石油学院学报,1996,18(4):138～142.
[16]姚正和,等.用先验地质信息约束的非线性AVO反演[J].地球物理学报,1994,增刊1:467～476.
[17]王云专,余杰,赵洪波,等.利用AVO效应反演泊松比和储层厚度[J].大庆石油学院学报,2001,25(4):1～3.
[18]张宝金,成谷,马在田等.用非零偏P P波、P SV波计算零偏反射纵波和反射横波[J].地球物理学进展.2002,17(1):102～106.
[19]李正文,许多.油气储集层AVO非线性反演方法及应用研究[J].石油物探,2002,41(1):23～36.
[20]孙鹏远,孙建国,卢秀丽.PSV波AVO方法研究进展[J].地球物理学进展.2002,18(4):602～607.
[21]冯贤钟,顾万勇.一种AVO反演泊松比的方法[J].石油物探,1994,33(3):1～7.
[2]马劲风.地震勘探中广义弹性阻抗的正反演[J].地球物理学报,2003,46(1):118～124.
[3]胡光岷,贺振华,黄德济.广义非线性反演[J].石油物探,2000,39(2):44～51.
[4]ShueyRT.ASimplificationoftheZoeppritzEquations[J].Geophysics.1985,50(4):609～614.
[5]ZandtG,AmmonCJ.Continental crustcompositioncon strainedbymeasurementsofcrustalPoissonratio[J].Nature,1995,374(9):152～154.
[6]WyllieMRJ,GregoryAR,GardnerGHF.Anexperimen talinvestingationoffactorsaffectingelasticwavevelocitiesin porousmedia[J].Geophysics,1958,23:450～480.
[7]KoefoedO.OntheeffectofPoisson'sratiosofrockstrataon thereflectioncoefficientsofplanewaves[J].GeophysProsp,1955,3:381～387.
[8]PaulM,KrailHenryB.Reflectionofsphericalseismicwaves inelasticlayeredmedia[J].1983,48:655～664.
[9]OstranderWJ.Plane wavereflectioncoefficientsforgassands atnonnormalanglesofincidence[J].Geophysics,1984,49:1637～1648.
[10]DomenicoSN.Rocklithologyandporositydetermination fromshearandcompressionalwavevelocity[J].Geophysics,1984,49:1188～1195.
[11]王云专,孙立志,任晓乔.储层参数对多波AVO效应的影响[J].中国海上油气(地质),2003,17(4):264～268.
[12]方赟,柯善珍,陈家敏,刘敬.AVO地震反演在油气预测中的应用[J].特种油气藏,2002,9(4):22～25.
[13]刘斌,席道瑛,葛宁洁,等.不同围压下岩石中泊松比的各向异性[J].地球物理学报,2002,45(6):880～890.
[14]王子煜.库车坳陷西部中新生代地层岩石物理和力学性质[J].地球物理学进展.2002,17(3):399～405.
[15]桂志先,朱广生,雷克辉.砂岩泊松比垂向变化差异分析[J].江汉石油学院学报,1996,18(4):138～142.
[16]姚正和,等.用先验地质信息约束的非线性AVO反演[J].地球物理学报,1994,增刊1:467～476.
[17]王云专,余杰,赵洪波,等.利用AVO效应反演泊松比和储层厚度[J].大庆石油学院学报,2001,25(4):1～3.
[18]张宝金,成谷,马在田等.用非零偏P P波、P SV波计算零偏反射纵波和反射横波[J].地球物理学进展.2002,17(1):102～106.
[19]李正文,许多.油气储集层AVO非线性反演方法及应用研究[J].石油物探,2002,41(1):23～36.
[20]孙鹏远,孙建国,卢秀丽.PSV波AVO方法研究进展[J].地球物理学进展.2002,18(4):602～607.
[21]冯贤钟,顾万勇.一种AVO反演泊松比的方法[J].石油物探,1994,33(3):1～7.
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