牛心坨油层聚合物/表面活性剂二元驱数值模拟研究

Numerical Simulation Research on Binary Flooding System of Surfactant/Polymer Used in Niuxintuo Reservoir

针对牛心坨油层建立地质模型,在水驱历史拟合基础上,利用FACS数值模拟软件完成了聚合物/表面活性剂二元驱数值模拟研究,对聚合物浓度、表面活性剂含量及聚合物/表面活性剂二元体系注入量进行了筛选,确定了适合牛心坨油层的聚合物/表面活性剂二元驱最佳方案:1 500 mg/L聚合物/0.3%B型表面活性剂二元复合驱,注入量0.3 PV,提高采收率10%以上。

A geological model of Niuxintuo Reservoir was created, and a numerical simulation research on a binary flooding system of surfactant/polymer was conducted with FACS numeral simulation software based on the historical data fitting of water flooding systems. The optimum fromulation of the binary flooding system of surfactant/polymer for Niuxintuo Reservoir was identified by optimizing polymer concentration, the surfactant content and the slug size ： 1 500 mg/L polymer/0.3% surfactant B. The recovery efficiency was increased by10% or more after 0. 3 PV of this flooding system was added.