摘要
Abstract
The relative permeability curve of reservoir in microbial flooding is the significant basic data for the calculation and prediction of the exploitation indexes of the microbial flooding oilfields. In order to know the multi-phase seepage law and the flooding mechanism in the microbial flooding process and subsequent water flooding process, the oil-water relative permeability curves of Ng3 reservoir in Zhongyi area before and after the microbial flooding of bacteria AB-1 and bacteria AB-2 were measured under the reservoir condition of 69℃ and 10 Mpa. The irreducible water saturation,the residual oil saturation, the absolute permeability and the relative permeability of cores before and after the microbial flooding are compared. The results show that,compared with before microbial flooding, the irreducible water saturation increases,the residual oil saturation decreases,the absolute permeability changes a little and the water saturation at equal permeability point obviously increase. The two kind strains of AB-1 and AB-2 all can enhance oil recovery factor, the microbial flooding of bacteria AB-1 can averagely enhances by 8.7% and AB-2 by 9.2%.关键词
微生物驱油/相对渗透率/残余油饱和度/束缚水饱和度/提高采收率Key words
microbial flooding/relative permeability curve/residual oil saturation/irreducible water saturation/EOR分类
能源科技
