水驱后注聚参数影响因素研究

Study on Influencing Factors of Polymer flooding parameters after Water flooding

聚合物驱能够在水驱后进一步采出更多的剩余油,从而提高原油采收率。通过物理实验和数值模拟计算,得到以下结论:阻力系数和残余阻力系数是降低聚合物油水流度比和水相渗透率的重要指标,影响着注入PV数和聚合物浓度;聚合物驱含水率曲线呈下降漏斗状,随注聚时机的提前,低含水期长,驱油效率高。

Polymer flooding could further produce more remaining oil after water flooding,so that can greatly enhance oil recovery.The following conclusions are obtained by physical experiment and numerical simulation：Resistance coefficient and residual resistance coefficient are important indexes to reduce mobility ratio and water phase permeability,which affect polymer volume;Water cut curve of polymer flooding presents a shape of decreased funnel,with the advance of injection timing,low water-cut stage is long and oil displacement efficiency is high.