摘要
应用低界面张力下相对渗透率曲线的处理方法,推导了低界面张力下水相相对渗透率的计算公式。以流度设计的基本思想为基础,结合聚合物的描述方法,建立了复合驱流度设计模型。以胜利油田孤岛中一区Ng3单元为例,研究了控制二元复合驱流度的最小聚合物浓度,并制作了相应的图版。研究结果表明:含水饱和度越大,界面张力越低,控制复合驱流度的最小聚合物浓度越大;复合驱段塞的流度要根据储层的水洗程度和主体段塞降低油水界面张力的程度来设计。
By the processing of relative permeability curves under low interfacial tension,the formula for calculatingthe aqueous-phase relative permeability is derived under low interfacial tension. Based on the fundamental thoughtof mobility designs,combined with the descriptions of polymer,a mobility design model for combination floodingis established. Taking Gudao Ng3 unit in Shengli Oilfield as an example,the minimum polymer concentrationwhich meet the requirements of controlling the mobility of surfactant-polymer flooding is studied. The results showthat the greater the water saturation,the greater the minimum polymer concentration,The lower the interfacialtension,the greater the minimum polymer concentration,the mobility of combination flooding should be designedaccording to the degree the reservoir is flooded and the interfacial tension of the main slug. Based on the resultsof lab experiments,this model can be used to design the mobility of combination flooding scientifically and fast,provide technical support for the successful implementation of combination flooding.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第6期131-134,212,共4页
Journal of Southwest Petroleum University(Science & Technology Edition)
关键词
复合驱
流度比
流度设计
低界面张力
聚合物浓度
combination flooding
mobility ratio
mobility design
low interfacial tension
polymer concentration
