Testing on rock sample data in dispersed shaly sands it shows that adding another parameter ( n ) to the model can decrease the relative error of fitted co . however , when we consider the difference of electrical properties between clay - bound water and formation water in the model , although another parameter ( qv ) is added to the model , the relative error of fitted co is increased slightly 通過一組分散泥質(zhì)砂巖巖樣實驗測量數(shù)據(jù)的計算。表明模型中增加參數(shù)n ( m n )可以使擬合的c _ t的相對誤差減小,但在考慮粘土結(jié)合水與地層水導(dǎo)電性差別時,模型中雖多加一個參數(shù)q _ v ,卻沒有減小擬合的c _ t的相對誤差。
Based on the effective medium hb resistivity models in laminated or dispersed shaly sands proposed by berg , the general effective medium hb resistivity model in laminated and dispersed shaly sands is established . in the derivation of the model we assume that clay - bound water fraction is included in total pores , clay - bound water and formation water have the same resistivity , and yet the difference of electrical properties between the two waters is incorporated into clay grain conductivity 本文首先基于berg提出的層狀泥質(zhì)或分散泥質(zhì)砂巖有效介質(zhì)hb電阻率模型,并在總孔隙中考慮粘土結(jié)合水的體積,但不考慮粘土結(jié)合水與地層水導(dǎo)電性的差別,而將粘土結(jié)合水與地層水的導(dǎo)電性差別歸結(jié)到粘土顆粒導(dǎo)電中,建立了混合泥質(zhì)砂巖有效介質(zhì)通用hb電阻率模型。