摘要
对不同水淹程度的岩心进行了荧光分析 ,对比了不同水淹程度聚合物驱剩余油的形态特点 ,研究了不可及孔隙体积对聚合物驱的影响 .结果表明 :聚合物溶液降低了流度比 ,在宏观上起到扩大波及体积的作用 ;聚合物溶液黏弹性加大了其与油膜之间的摩擦力 ,提高了微观驱油效率 ;不同水淹程度产生不同特征的剩余油 ,盲端状剩余油受聚合物驱影响最大 ;聚合物驱剩余油分布受不可及孔隙体积倍数影响 。
The effective factors of distribution of the remaining oil in polymer flooding reservoir has been studied.The fluorescence analysis on the different rock has been made;The characteristics of the different water flooding degrees under polymer flooding have been compared. The effect of inaccessible pore volumes on polymer flooding and surface friction function has been discussed.The result shows that polymer solution with visco-elastic characteristic increases micoscopic oil displacement efficiency and expand sweep factors. The visco-elastic characteristic improves friction between oil film and polymer solution. Different flooded degree leads to different characteristic remaining oil. The remaining oil distribution is affected by inaccessible pore volumes.
出处
《大庆石油学院学报》
CAS
北大核心
2004年第2期25-27,共3页
Journal of Daqing Petroleum Institute
基金
国家自然科学基金资助项目 ( 10 172 0 2 8)
关键词
聚合物驱
剩余油微观分布
水淹程度
不可及孔隙体积倍数
polymer flooding
microscopic distribution of remaining oil
water flooding degree
inaccessible pore volumes
