化学驱试验中碱剂传质规律研究

储层中的粘土矿物对化学驱提高原油采收率至关重要,其中粘土矿物与碱化学剂作用的影响尤为突出,为搞清储层中常见的粘土矿物与化学驱中常见的几种碱剂的相互作用机理,变化规律,以及由此产生的矿物碱耗大小,影响因素和相互关系,探索和建立较为完善的碱耗预测模型,建立了一套粘土矿物碱耗的定量预测的研究方法。运用此套方法不仅能预测动态砂管的碱耗规律,而且为预测实际地层中碱剂传质规律有重要的科学价值。

Study on Alkali Transmission Principles in Alkali Chemical Flooding Experiment

The type and amount of clay minerals in reservoirs are very important factors in enhanced oil recovery (EOR) by chemical flooding. Especially, the influence of clay- alkali reaction is vital. In this research, we state the reaction mechanism and basic principles between common clay minerals and common alkalis used in EOR, alkali consumption, various key factors and corresponding effects. We also aim at studying and establishing alkaliconsumption prediction model. On the basis of previous achievements, we have established the studying method of alkali consumption of clays. The method can not only be used for evaluating the magnitude of alkaliconsumption in kinetic sandpack flooding experiments, also has very important scientific values in the fields of predicting alkali transmission in actual reservoirs.