复合驱界面张力与驱油效率的关系研究  

Study on relation between interfacial tension and displacement efficiency of ASP flooding

作　　者：唐钢[1] 李华斌[1] 苏敏[2] 

机构地区：[1]西南石油学院油气藏地质与开发工程国家重点实验室,四川成都610500 [2]胜利油田动力机械厂,山东东营257032

出　　处：《大庆石油地质与开发》2005年第3期81-83,i006-i007,共5页Petroleum Geology & Oilfield Development in Daqing

摘　　要：针对大庆油田油层的具体情况,实验采用3种不同类型的表面活性剂配制了三元复合驱油体系,并在3组不同渗透率人造均质岩心上进行了微观驱油实验,研究了不同体系的界面张力与驱油效率的关系。实验结果表明:在渗透率相同的条件下,驱油体系与原油之间的界面张力越低,驱油效率越高;在驱油体系相同的条件下,具有中等渗透率岩心的驱油效率更高一些。超低界面张力并不是绝对必要的。ASP flooding pilot test has been a great success in Daqing Oil Field. For specific condition of reservoir(temperature being 45℃, viscosity being 11.4mPa.s, and salinity being 4456mg/L), there are three different kinds of surfactant prepared for the displacement system in the experiment. The microscopic displacement test has been done in three different permeability,synthetic, homogenous cores, in order to study the relation between interfacial tension and displacement efficiency of different systems. The result shows: in the condition of the same permeability, if the IFT between the displacement system and oil is lower, the efficiency is higher; in the condition of the same displacement system, the efficiency is higher in the core which has medium permeability. Moreover, ultra-low IT is not necessary.

关 键 词：复合驱 渗透率 界面张力 表面活性剂 驱油效率 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]