基于BISQ模型双相EDA介质中VSP记录模拟
|
摘要
本文针对目前的现状,采用了近来比较热门和精确的交错网格有限差分法实现地震频带内弹性波的数值模拟.通过实例模拟了VSP记录,证实了这种方法的可行性和有效性.从我们的正演研究中,发现慢纵波的振幅与渗透率成正比,与孔隙度成反比;而慢纵波的速度则和孔隙度和流体的密度成正比.
This paper adapts more exact finite difference method of staggered grid to carry out numerical modeling in seismic elastic frequency band.We give some sample to simulated VSP record(data).Its results confirmed that this method is feasible and valid.The study shows the amplitude of slow compressional-wave(P-wave) is directly proportional to the rate of saturation and inversely proportional to porosity.And the velocity of slow compressional-wave(P-wave) is in direct proportion to the porosity and the density of fluid.
This paper adapts more exact finite difference method of staggered grid to carry out numerical modeling in seismic elastic frequency band.We give some sample to simulated VSP record(data).Its results confirmed that this method is feasible and valid.The study shows the amplitude of slow compressional-wave(P-wave) is directly proportional to the rate of saturation and inversely proportional to porosity.And the velocity of slow compressional-wave(P-wave) is in direct proportion to the porosity and the density of fluid.
引文
[1]Biot M A.Theory of propagation of elastic waves in a fluid saturatedporous solid,I,low frenquency rang[J].J.Acoust.Soc.Am.,1956,28(2):168~178.
[2]Mavko G,Nur A.Melt Squirt in asthenosphere[J].J.Geophys.Res.1975,80:1444~1448.
[3]Mavko G and Nur A.Wave attenuation in partially saturated rocks[J].Geophysics,1979,44:161~178.
[4]Dvorkin J,Hoeksema R N.The squirt-flow mechanism:Macroscopicdescription[J].Geophysics,1994,59:428~438.
[5]Dvorkin J,Nur A.Dynamic poroelasticity:A unified model modelwith the squirt and the Biot mechanisms[J].Geophyscis,1993,58:524~533.
[6]Parra J O.The transversely isotropic poroelastic wave equation in-cludeing the Biot and the squirt mechanisms:Theory and application[J].Geophysics,1997,62:309~318.
[7]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 J X,Yang D H,Yang H Z.Inversion of reservoir parametersbased on the BISQ model In partially saturated porous media[J].Geophys,2004,47(6):1101~1105.
[8]杨宽得,杨顶辉,王书强.基于BISQ方程的波场模拟[J].地球物理学报,2002,45(6):853~861.Yang K D,Yang D H,Wang S Q.Wave field simulation based onBISQ equation[J].Geophys,2002,45(6):853~861.
[9]孟庆生,何樵登,朱建伟,王德利.基于BISQ模型的双相各向同性介质中地震波数值模拟[J].吉林大学报(地球科学版)2003,33(2):217~221.Meng Q S,He Q D,Zhu J W,Wang D L.The two-phase isotropicmedium earthquake wave numberical simulation based on in BISQmodel[J].Journal of Jilin University(Earth Science Edition),2003,33(2):217~221.
[10]杨顶辉,张中杰,滕吉文,王光杰.双相各向异性研究、问题与应用前景[J].地球物理学进展,2000,15:7~21.Yang D H,Zhang Z J,Teng J W,Wang G J.two-phase aniso-tropic researches,questions and application prospect[J].Geophysicsprogress,2000,15:7~21.
[11]王德利,何樵登,韩立国.裂隙型单斜介质中多方位地面三分量记录模拟[J].地球物理学报,2005,48(2):386~393.Wang D L,He Q D,Han L G.Multi-azimuth three-componentsurface seismic modeling for cracked monoclinic media[J].ChineseJ.Geophys.(in Chinese),2005,48(2):386~393.
[12]王德利,何樵登,韩立国.单斜介质中方位NMO速度Thomsen参数反演方法研究[J].地球物理学报,2006,49(1):249~255.Wang D L,He Q D,Han L G.Thomsen parameter inversion withazimuthal NMO velocity in monoclinic media[J].Chinese J.Geo-phys.(in Chinese),2006,49(1):249~255.
[2]Mavko G,Nur A.Melt Squirt in asthenosphere[J].J.Geophys.Res.1975,80:1444~1448.
[3]Mavko G and Nur A.Wave attenuation in partially saturated rocks[J].Geophysics,1979,44:161~178.
[4]Dvorkin J,Hoeksema R N.The squirt-flow mechanism:Macroscopicdescription[J].Geophysics,1994,59:428~438.
[5]Dvorkin J,Nur A.Dynamic poroelasticity:A unified model modelwith the squirt and the Biot mechanisms[J].Geophyscis,1993,58:524~533.
[6]Parra J O.The transversely isotropic poroelastic wave equation in-cludeing the Biot and the squirt mechanisms:Theory and application[J].Geophysics,1997,62:309~318.
[7]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 J X,Yang D H,Yang H Z.Inversion of reservoir parametersbased on the BISQ model In partially saturated porous media[J].Geophys,2004,47(6):1101~1105.
[8]杨宽得,杨顶辉,王书强.基于BISQ方程的波场模拟[J].地球物理学报,2002,45(6):853~861.Yang K D,Yang D H,Wang S Q.Wave field simulation based onBISQ equation[J].Geophys,2002,45(6):853~861.
[9]孟庆生,何樵登,朱建伟,王德利.基于BISQ模型的双相各向同性介质中地震波数值模拟[J].吉林大学报(地球科学版)2003,33(2):217~221.Meng Q S,He Q D,Zhu J W,Wang D L.The two-phase isotropicmedium earthquake wave numberical simulation based on in BISQmodel[J].Journal of Jilin University(Earth Science Edition),2003,33(2):217~221.
[10]杨顶辉,张中杰,滕吉文,王光杰.双相各向异性研究、问题与应用前景[J].地球物理学进展,2000,15:7~21.Yang D H,Zhang Z J,Teng J W,Wang G J.two-phase aniso-tropic researches,questions and application prospect[J].Geophysicsprogress,2000,15:7~21.
[11]王德利,何樵登,韩立国.裂隙型单斜介质中多方位地面三分量记录模拟[J].地球物理学报,2005,48(2):386~393.Wang D L,He Q D,Han L G.Multi-azimuth three-componentsurface seismic modeling for cracked monoclinic media[J].ChineseJ.Geophys.(in Chinese),2005,48(2):386~393.
[12]王德利,何樵登,韩立国.单斜介质中方位NMO速度Thomsen参数反演方法研究[J].地球物理学报,2006,49(1):249~255.Wang D L,He Q D,Han L G.Thomsen parameter inversion withazimuthal NMO velocity in monoclinic media[J].Chinese J.Geo-phys.(in Chinese),2006,49(1):249~255.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心