基于孔隙分类理论的自相容模型横波速度预测方法
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摘要
岩石物理建模是求取横波速度的重要手段之一,针对勘探开发过程中缺少横波速度资料的情况,研发了一种基于等效自相容近似(SCA)模型的碎屑岩地区横波速度计算方法。首先基于孔隙分类理论计算碎屑岩中含束缚水的无效孔隙大小;然后将无效孔隙作为岩石基质成分进行建模;再利用有效孔隙建立岩石骨架并进行流体饱和计算;最后在实测纵波速度约束下,通过调整岩石基质各组分大小迭代计算横波速度。试验结果证明,该方法预测四川盆地碎屑岩地区横波速度的精度较高,有一定的推广意义。
The rock physics modeling is an important means for obtaining the shear wave velocity data in exploration and development.We have developed a shear wave velocity estimation method based on the self-consistent approximations(SCA)model.Firstly,based on the theory of porosity classification we calculate the inactive porosity with bound water in clastic rocks and get it as the rock matrix components.Then we make use of effective porosity as the rock frame and conduct the fluid saturated calculation.Finally,we take the measured P-wave velocity as the constraint and calculate the shear wave velocity by adjusting the size of the components in the rock matrix iteratively.The method has higher precision for shear wave velocity estimation in clastic rocks in Sichuan Basin and is worth to promote.
The rock physics modeling is an important means for obtaining the shear wave velocity data in exploration and development.We have developed a shear wave velocity estimation method based on the self-consistent approximations(SCA)model.Firstly,based on the theory of porosity classification we calculate the inactive porosity with bound water in clastic rocks and get it as the rock matrix components.Then we make use of effective porosity as the rock frame and conduct the fluid saturated calculation.Finally,we take the measured P-wave velocity as the constraint and calculate the shear wave velocity by adjusting the size of the components in the rock matrix iteratively.The method has higher precision for shear wave velocity estimation in clastic rocks in Sichuan Basin and is worth to promote.
引文
[1]HAN D H,NUR A,MORGAN D.Effects of porosity and clay content on wave velocities in sandstones[J].Geophysics,1986,51(11):2093-2107
[2]EBERHART-PHILLIPS D M.Investigation of crustal structure and active tectonic processes in the coast ranges[D].USA:Stanford University,1989
[3]CASTAGNA J P,BATZLE M L,EASTWOOD R L.Relationships between compressional wave and shearwave velocities in clastic silicate rocks[J].Geophysics,1985,50(4):571-581
[4]MAVKO G,MUKERJI T,DVORKIN J.The rock physics handbook,second edition:tools for seismic analysis of porous media[M].New York:Cambridge University Press,2009:1-511
[5]郭栋,印兴耀,吴国忱.横波速度计算方法与应用[J].石油地球物理勘探,2007,42(5):535-538GUO D,YIN X Y,WU G C.Computational approach of S-wave velocity and application[J].Oil Geophysical Prospecting,2007,42(5):535-538
[6]谢月芳,张纪.岩石物理模型在横波速度估算中的应用[J].石油物探,2012,51(1):65-70XIE Y F,ZHANG J.Application of rock physical model in S-wave velocity estimation[J].Geophysical Prospecting for Petroleum,2012,51(1):65-70
[7]张元中,周开金,赵建斌,等.砂泥岩地层横波测井曲线预测方法研究[J].石油物探,2012,51(5):508-514ZHANG Y Z,ZHOU K J,ZHAO J B,et al.Shear-wave logging curve prediction method for shaly sand formation[J].Geophysical Prospecting for Petroleum,2012,51(5):508-514
[8]胡起,陈小宏,李景叶.基于各向异性岩石物理模型的页岩气储层横波速度预测[J].石油物探,2014,53(3):254-261HU Q,CHEN X H,LI J Y.Shear wave velocity prediction for shale gas resevoirs based on anisotropic rock physics model[J].Geophysical Prospecting for Petroleum,2014,53(3):254-261
[9]武文来,印兴耀.岩石物理参数与地球物理特征关系研究——以QHD326油田为例[J].石油物探,2008,47(3):235-243WU W L,YIN X Y.Study of relationship between petrophysical parameters and geophysical characteristics:case study of QHD326 oilfield[J].Geophysical Prospecting for Petroleum,2008,47(3):235-243
[10]白俊雨,宋志翔,苏凌,等.基于Xu-White模型横波速度预测的误差分析[J].地球物理学报,2012,55(2):589-595BAI J Y,SONG Z X,SU L,et al.Error analysis of shear-velocity prediction by the Xu-White model[J].Chinese Journal of Geophysics,2012,55(2):589-595
[11]云美厚,管志宁.储层条件下砂岩纵波和横波速度的理论计算[J].石油物探,2002,41(3):289-292YUN M H,GUAN Z N.The estimation of P and Swave velocities in sandstone under in-situ conditions[J].Geophysical Prospecting for Petroleum,2002,41(3):289-292
[12]熊晓军,吕龑,林凯,等.一种碳酸盐岩流体替换新方法[J].中国石油大学学报:自然科学版,2012,36(6):57-61XIONG X J,LV Y,LIN K,et al.A novel method of fluid substitution in carbonates[J].Journal of China University of Petroleum,2012,36(6):57-61
[13]孙福利,杨长春,麻三怀,等.横波速度预测方法[J].地球物理学进展,2008,23(2):470-474SUN F L,YANG C C,MA S H,et al.An S-wave velocity predicted method[J].Progress in Geophysics,2008,23(2):470-474
[14]董宁,霍志周,孙赞东,等.泥页岩岩石物理建模研究[J].地球物理学报,2014,57(6):1990-1998DONG N,HUO Z Z,SUN Z D,et al.An investigation of a new rock physics model for shale[J].Chinese Jounal of Geophysics,2014,57(6):1990-1998
[15]印兴耀,李龙.基于岩石物理模型的纵、横波速度反演方法[J].石油物探,2015,54(3):249-253YIN X Y,LI L.P-wave and S-wave velocities inversion based on rock physics model[J].Geophysical Prospecting for Petroleum,2015,54(3):249-253
[16]XU S,WHITE R E.A physical model for shear-wave velocity prediction[J].Geophysical Prospecting,1996,44(4):687-717
[17]张广智,李呈呈,印兴耀,等.基于修正Xu-White模型的碳酸盐岩横波速度估算方法[J].石油地球物理勘探,2012,47(5):717-722ZHANG G Z,LI C C,YIN X Y,et al.A shear velocity estimation method for carbonate rocks based on the improved Xu-White model[J].Oil Geophysical Prospecting,2012,47(5):717-722
[18]熊晓军,林凯,贺振华.基于等效弹性模量反演的横波速度预测方法[J].石油地球物理勘探,2012,47(5):723-727XIONG X J,LIN K,HE Z H.A method for S-wave velocity estimation based on equivalent elastic modulus inversion[J].Oil Geophysical Prospecting,2012,47(5):723-727
[19]林凯,贺振华,熊晓军,等.基于基质矿物模量自适应提取横波速度反演方法[J].石油地球物理勘探,2013,48(2):262-267LIN K,HE Z H,XIONG X J,et al.S-wave velocity inversion based on adaptive extraction of matrix mineral modulus[J].Oil Geophysical Prospecting,2013,48(2):262-267
[20]DVORKIN J,MAVKO G,GUREVICH B.Fluid substitution in shaley sediment using effective porosity[J].Geophysics,2007,72(3):1-8
[21]BERRYMAN J G.Mixture theories for rock properties[C]//Rock physics and phase relations:a handbook of physical constants.Washington,DC:American Geophysical Union,1995:205-228
[2]EBERHART-PHILLIPS D M.Investigation of crustal structure and active tectonic processes in the coast ranges[D].USA:Stanford University,1989
[3]CASTAGNA J P,BATZLE M L,EASTWOOD R L.Relationships between compressional wave and shearwave velocities in clastic silicate rocks[J].Geophysics,1985,50(4):571-581
[4]MAVKO G,MUKERJI T,DVORKIN J.The rock physics handbook,second edition:tools for seismic analysis of porous media[M].New York:Cambridge University Press,2009:1-511
[5]郭栋,印兴耀,吴国忱.横波速度计算方法与应用[J].石油地球物理勘探,2007,42(5):535-538GUO D,YIN X Y,WU G C.Computational approach of S-wave velocity and application[J].Oil Geophysical Prospecting,2007,42(5):535-538
[6]谢月芳,张纪.岩石物理模型在横波速度估算中的应用[J].石油物探,2012,51(1):65-70XIE Y F,ZHANG J.Application of rock physical model in S-wave velocity estimation[J].Geophysical Prospecting for Petroleum,2012,51(1):65-70
[7]张元中,周开金,赵建斌,等.砂泥岩地层横波测井曲线预测方法研究[J].石油物探,2012,51(5):508-514ZHANG Y Z,ZHOU K J,ZHAO J B,et al.Shear-wave logging curve prediction method for shaly sand formation[J].Geophysical Prospecting for Petroleum,2012,51(5):508-514
[8]胡起,陈小宏,李景叶.基于各向异性岩石物理模型的页岩气储层横波速度预测[J].石油物探,2014,53(3):254-261HU Q,CHEN X H,LI J Y.Shear wave velocity prediction for shale gas resevoirs based on anisotropic rock physics model[J].Geophysical Prospecting for Petroleum,2014,53(3):254-261
[9]武文来,印兴耀.岩石物理参数与地球物理特征关系研究——以QHD326油田为例[J].石油物探,2008,47(3):235-243WU W L,YIN X Y.Study of relationship between petrophysical parameters and geophysical characteristics:case study of QHD326 oilfield[J].Geophysical Prospecting for Petroleum,2008,47(3):235-243
[10]白俊雨,宋志翔,苏凌,等.基于Xu-White模型横波速度预测的误差分析[J].地球物理学报,2012,55(2):589-595BAI J Y,SONG Z X,SU L,et al.Error analysis of shear-velocity prediction by the Xu-White model[J].Chinese Journal of Geophysics,2012,55(2):589-595
[11]云美厚,管志宁.储层条件下砂岩纵波和横波速度的理论计算[J].石油物探,2002,41(3):289-292YUN M H,GUAN Z N.The estimation of P and Swave velocities in sandstone under in-situ conditions[J].Geophysical Prospecting for Petroleum,2002,41(3):289-292
[12]熊晓军,吕龑,林凯,等.一种碳酸盐岩流体替换新方法[J].中国石油大学学报:自然科学版,2012,36(6):57-61XIONG X J,LV Y,LIN K,et al.A novel method of fluid substitution in carbonates[J].Journal of China University of Petroleum,2012,36(6):57-61
[13]孙福利,杨长春,麻三怀,等.横波速度预测方法[J].地球物理学进展,2008,23(2):470-474SUN F L,YANG C C,MA S H,et al.An S-wave velocity predicted method[J].Progress in Geophysics,2008,23(2):470-474
[14]董宁,霍志周,孙赞东,等.泥页岩岩石物理建模研究[J].地球物理学报,2014,57(6):1990-1998DONG N,HUO Z Z,SUN Z D,et al.An investigation of a new rock physics model for shale[J].Chinese Jounal of Geophysics,2014,57(6):1990-1998
[15]印兴耀,李龙.基于岩石物理模型的纵、横波速度反演方法[J].石油物探,2015,54(3):249-253YIN X Y,LI L.P-wave and S-wave velocities inversion based on rock physics model[J].Geophysical Prospecting for Petroleum,2015,54(3):249-253
[16]XU S,WHITE R E.A physical model for shear-wave velocity prediction[J].Geophysical Prospecting,1996,44(4):687-717
[17]张广智,李呈呈,印兴耀,等.基于修正Xu-White模型的碳酸盐岩横波速度估算方法[J].石油地球物理勘探,2012,47(5):717-722ZHANG G Z,LI C C,YIN X Y,et al.A shear velocity estimation method for carbonate rocks based on the improved Xu-White model[J].Oil Geophysical Prospecting,2012,47(5):717-722
[18]熊晓军,林凯,贺振华.基于等效弹性模量反演的横波速度预测方法[J].石油地球物理勘探,2012,47(5):723-727XIONG X J,LIN K,HE Z H.A method for S-wave velocity estimation based on equivalent elastic modulus inversion[J].Oil Geophysical Prospecting,2012,47(5):723-727
[19]林凯,贺振华,熊晓军,等.基于基质矿物模量自适应提取横波速度反演方法[J].石油地球物理勘探,2013,48(2):262-267LIN K,HE Z H,XIONG X J,et al.S-wave velocity inversion based on adaptive extraction of matrix mineral modulus[J].Oil Geophysical Prospecting,2013,48(2):262-267
[20]DVORKIN J,MAVKO G,GUREVICH B.Fluid substitution in shaley sediment using effective porosity[J].Geophysics,2007,72(3):1-8
[21]BERRYMAN J G.Mixture theories for rock properties[C]//Rock physics and phase relations:a handbook of physical constants.Washington,DC:American Geophysical Union,1995:205-228