W-S模型中B参数的确定方法

A Method for Determining the Equivalent Conductance of Counterions Within Waxman-Smits Model in Shaly Sand.

从泥质砂岩储层特点出发 ,以W S模型为理论依据 ,详细研究了W S模型中平衡阳离子电化学当量电导B的确定方法。在 15块岩心电阻率测量数据的基础上 ,研究出了B参数随溶液矿化度和温度变化的经验关系式。此项成果已应用于饱和度数字处理工作 ,目前已经处理了 60余口井 ,应用效果较好。

The equivalent concluctance of counterions is the key factor in determining oil saturation. It is controlled by both solution conductivity and temperature. In this paper a method of determining the equivalent conductance of counterions is detailed based on Waxman Smits theory and the characteristics of shaly sand formation. The empirical relationship expression between the equivalent conductance of counterions and solution salinity & temperature is given through lab measurements of 15 core samples under four different temperatures. The relationship is used in saturation interpretation of 60 wells in Jidong Oilfield,result of which is good.