估算地层横波速度的新方法

在无法由测井资料直接得出横波速度信息时，可将岩石当作由不同形状的孔隙、各种不同矿物成分及孔隙水组成的复合介质，参照Ｂｅｒｒｙｍａｎ散射模型的方法，计算复合介质的等效弹性模量，并据此计算其纵、横波速度。这样在已有由常规声波测井提供的纵波速度时，即可换算出横波速度。本文给出理论计算方法，并对这种方法进行了讨论。

Estimation of Formation V_s

When there is no way to get Vs from logging data directly, rocks can be considered as composite media which consist of various mineral compositions,different shapes of pores and different pore water, and the equivalent elastic moduli of composite media can be calculated with reference to Berryman scattering model, and on the basis of which both V, and Vs are derived.In this way, Vs can be converted from Vp given by conventional acoustic logs. Theoretical algorithm is given and discussed.