摘要
以西峰油田白马中区长8低渗储层为例,通过在不同条件下对研究区的岩心做水驱油效率和压汞试验,了解实验室岩心水驱油的基本特征,进一步分析影响水驱油效率的因素。结果表明,注入压力、注入倍数、渗透率、水驱速度和孔喉的结构特征在一定程度都会影响岩心的水驱油效率,不同的条件下水驱油效率的变化趋势不同。
By taking Chang 8 Reservoir of Baima Area of Xifeng Oilfield,Ordos Basin as an example,According to the laboratory water-flooding experiments and mercury injection experiments of the cores from Chang 8 Reservoir,the basic characteristics of water-flooding and pore structure were clarified and the influence factors of water-oil displacement efficiency were analyzed.The results show that the factors of the water displacement pressure ,water inject multiple,water drive velocity and pore structure can affect the water-oil displacement efficiency,and different conditions and stages have different variation tendencies.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2009年第4期284-288,共5页
Journal of Oil and Gas Technology
关键词
特低渗透油藏
水驱油效率
孔喉特征
西峰白马中区长8
super-low permeability reservoirs
water oil displacement efficiency
influence factors
Chang8 Reservoir of Baima Area
Xifeng Oilfield
