混合泥质砂岩通用双电层电导率模型的研究与应用

Research and Application of Double Electrode Layer Conductivity Model for Mixed Shaly Sand

基于层状泥质和分散泥质砂岩并联导电的观点,分散泥质砂岩的导电可采用VSAfanasyev等人提出的双电层电导率模型进行描述,从而建立考虑分散和层状泥质同时存在的混合泥质砂岩通用双电层电导率模型,该模型是关于含水饱和度的隐函数方程。利用该模型对海拉尔盆地高泥地区的苏1、苏3井进行处理,并将模型计算的含水饱和度与试油结果进行对比,结果表明该模型适用于复杂泥质砂岩地层解释。

Based on the idea that the bedded mud and disperse shaly sand can be electrically conduct in parallel, the conduction of disperse shaly sand can be described with the double eletrode layer conductivity model proposed by V S Afanasyev, etc. , and then the double e-lectrode layer conductivity model for mixed shaly sand, for which the coexistence of disperse mud and bedded mud is fully considered. This model is related to the implicit function equation about water saturation. This model has been applied to Well Su1 and Well Su2 in high mud content area in Hailaer basin, and the calculated water saturation results according to the model have been compared with those from well testing. The comparison results suggest that this model is suitable for the interpretation of complicated muddy sand formation.