摘要
阳离子交换容量(QV)是Waxman-Smits模型的关键参数,利用常规测井求准QV是岩石物理分析家一直探讨的热点。在充分利用测井曲线和全岩矿物衍射、黏土矿物衍射岩心分析资料的基础上,提出了基于矿物组分模型求解各种黏土矿物含量的新方法,与衍射岩心分析结果一致;结合各种黏土矿物的岩石阳离子交换能力(CEC)值,可求得地层总的CEC值,继而可以求得QV曲线,结果与阳离子交换能力实验相吻合;在低电阻率层段利用Waxman-Smits模型计算的含油饱和度比Archie公式更加合理。
Qv （cation-exchange capacity per unit pore volume） is the key parameter of Waxrnan- Smits model to calculate water saturation. The method of getting Qv by conventional logging is a hot spot that rock physics analysts have been exploring. On the basis of making full use of well logging curves and the experiment data of whole rock and clay mineral diffraction, proposed is a new model for solving a variety of clay mineral compositions and contents. Core analysis data prove the calculation results are good. With combination of cation exchange capacity （CEC） of every clay mineral, CEC curves of the borehole can be obtained. Qv also can be figured out and results are consistent with core analysis. So the water saturation from Waxman-Smits model is more effective than that from Archie Equation in the low-resistivity reservoir evaluation.
出处
《测井技术》
CAS
CSCD
北大核心
2010年第5期415-418,共4页
Well Logging Technology
作者简介
孙建孟，男，1964年生，教授，博士生导师，主要从事测井资料处理、解释与岩石物理研究。
