摘要
研究安塞油田长6油藏水驱后储层特征的变化规律及微观残余油、剩余油的分布规律，以开发时间最早的王窑区块为例，结合近年来提高采收率技术应用的情况，分析制约长6油藏提高采收率的技术难点和关键点．有针对性地提出提高采收率的技术思路及措施意见．指导后期主力油藏高效开发和稳产。
This paper studies the laws of distribution of the microscopic residual oil and remaining oil, and characteristics variation of reservoirs after waterflooding in Chang6 reservoirs of Ansai Oilfield. Taking the earliest developed Wangyao block as an example, technical diffieuhies arid key points that restrict the EOR technology in Chang6 reservoirs are analyzed, combining with the situation of application of EOR （enhanced oil recovery） techniques in recent years. Some technical ideas, measures and opinions about EOR are accordingly put forward to guide the efficient deveh）pnlent and stable production of later main oil reservoirs.
关键词
水驱
非均质性
残余油
剩余油
提高采收率
安塞油田
长6油藏
water flooding
heterogeneity
residual oil
remaining oil
enhanced oil recovery
Ansai Oilfield
Chang6 reservoir
