【摘要】 文中利用各向异性孔隙介质声学理论,对横向各向同性孔隙介质Biot模型进行了详细推导,得到了弹性参数的计算公式,并进一步进行了数值模拟和分析。在横向各向同性孔隙介质Biot模型的基础上,引入孔隙介质饱和度影响机制,对双相孔隙流体下岩石声学性质进行了计算分析,得到声波岩石物理、声波测井以及地震勘探不同频率下的声波规律及特性,并对比分析了其变化趋势和差别,分析了各种波的频散特性,为实际数据处理提供理论依据,也为声波速度的外推提供了一种新的思路。更多还原

【Abstract】 As a kind of anisotropic media,transversely isotropic reservoir is widely distributed in sedimentary rocks.In this work,Biot model for transversely isotropic porous media is deduced systematically based on acoustic theory of anisotropic porous media.The calculation formula for elastic parameters is obtained,and simulations and analysis with practical parameters are carried out.An influence mechanism of porous media saturation is introduced from Biot model.Then calculations and analysis of rock acoustic properties are conducted in conditions of two-phase porous fluids,and acoustic properties under different frequencies of acoustic petrophysics,acoustic logging and seismic are gained.This provides theoretical basis for actual application of acoustic data and new idea for velocity extrapolation.更多还原