摘要
该文用微观和宏观两种渗流实验方法研究了交联聚合物的驱油机理，认为交联聚合物不但有调剖作用，同时还具有驱油作用。交联聚合物可明显改善油藏高含水期水驱油效果，控制含水上升速度。在注水时，以适当的主段塞和副段塞组合可获得较好的增油降水效果。在该实验条件下，推荐段塞组合为：主段塞０．２ＰＶ，不加清水隔离段塞，副段塞０．０５～０．１ＰＶ。实验采用此段塞组合可提高采收率２０％～２６％。含水率下降３０％以上。
The paper studies the displacement mechanism with crosslinked polymer by percolated experiments of both micro and macro methods.The authors consider that the crosslinked polymer has not only profile control effect,but also displacement one. Crosslinked polymer can significantly improve waterflood effect in high water cut reservoir and control water cut raising rate.The better results can be obtained when the appropriate combination of major slug and subslug is used during waterflooding.The recommended slug combination is:0.2 PV major slug,without isolated fresh water slug, 0.05￣0.1 PV subslug under experimental conditions.This slug combination can increase 20%￣26% oil recovery and reduce over 30% water cut.
关键词
交联反应
驱油效率
聚合驱油
驱油机理
crosslinked reaction, polymer,oil displacement mechanism, oil displacement efficiency.
