In order to achieve the goal of deep profile control and flooding in high water content bearing oilfields,the particle size distribution and association properties of water-based supramolecular microspheres were evaluated.It was found that the particle size distri-bution of water-based supramolecular microspheres was in the nanometer to micrometer range.Under saline conditions,the expansion factor of the correlation phenomenon aggregate particle size could reach more than 5 times.Under static conditions,effective particle aggre-gation can be achieved when the system concentration is above 1 000 mg/L.Under the con-ditions of core displacement simulation experiments,the system injection process still has a high degree of enhanced oil recovery under low resistance coefficient,high water content conditions,and the presence of permeability differences.The applicability of this system is good,and it has certain reference significance for improving the deep processing capacity of"dual ultra-high"oilfields through oil displacement control.
关键词
深部调驱/水基超分子微球/粒径分布/提高采收率
Key words
deep regulation and displacement/water-based supramolecular microspheres/particle size distribution/enhanced oil recovery
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