聚合物与水气交替联驱提高采收率试验研究

On Experimental Study of Polymer-WAG Associated Flooding for EOR

采用三种不同沉积韵律平面模型试验研究水驱后聚合物与水气交替联驱提高原油采收率的驱替特征。结果表明,聚合物与水气交替联驱对正韵律油藏提高采收率效果很好;对反韵律油藏和复合韵律油藏也有不同程度提高采收率效果。通过分析两种不同韵律砂岩油藏水气交替提高采收率矿场试验成功实例,认为聚合物与水气交替联驱法可综合发挥两种方法的优势,在类似油藏中比单一方法有更好的提高采收率效果。

This paper applies three area models of different sedimentary rhythms to investigate some characteristics about polymer-WAG associated flooding for EOR. The results show that it has very good effects on positive rhythm reservoirs, and also has different degree effects on reverse rhythm reservoirs and compound rhythm reservoirs. By analyzing two successful field experimental examples on WAG method applied in different rhythm reservoirs for EOR, it is predicted that the technique of polymer and WAG combined flooding will make the EOR effect better than single method in the similar reservoirs because it combines the advantages of the two methods Area Model; Polymer Flooding;