缔合聚合物在低渗透油层中驱油研究Experimental research on association polymer flooding in low permeability oil layers
张云善,李华斌,孙荟来
ZHANG Yun-shan,LI Hua-bin,SUN Hui-lai(State Key EOR Lab of Southwest Petroleum University
摘要(Abstract)：
针对低渗透油层能否进行有效缔合聚合物驱的问题,本文运用室内物理模拟实验对9块渗透率小于100×10-3μm2的不同岩心进行了研究。证明缔合聚合物在低渗透油层中具有一定的驱油效果,平均提高采收率程度可达到3.59%OOIP。确定了适合缔合聚合物在低渗透油层中驱油的最低渗透率临界值40×10-3μm2;同时在相同的渗透率条件下,加大注入量能增加缔合聚合物在低渗油层中的采出程度,并且在要达到相同的提高采收率值的情况下,加大注入量的油层适应范围更宽。该结论为低渗透油藏进行缔合聚合物驱的决策提供了重要参考。
Whether effective association polymer flooding can be applied in low permeability oil reservoir,it is a problem to be understood.According to this paper,9 kinds of cores with permeability less than 100×10-3μm2 have been studied based on lab physical simulation tests.It is indicated that certain oil displacement results can be obtained with the application of association polymer to low permeability oil layer,and the recovery factor can be improved by 3.59% OOIP in average.It is determined: the lowest critical permeability for association polymer flooding in low permeability reservoir is 40×10-3μm2;under the same permeability condition,the increase of injected volume can increase the degree of reserve recovery of low permeability reservoir,and if the recovery factor improved is the same,the oil layer with increased injected volume can be more widely adapted.The conclusion can be as an important reference for association polymer flooding in low permeability oil reservoir.
关键词(KeyWords)：
缔合聚合物驱;低渗透油层;提高采收率;驱油实验
association polymer flooding;low permeability oil layer;EOR;oil displacement test
基金项目(Foundation):
作者(Author):
张云善,李华斌,孙荟来
ZHANG Yun-shan,LI Hua-bin,SUN Hui-lai(State Key EOR Lab of Southwest Petroleum University
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