摘要
建立了非均质地层中考虑弛张特性的黏弹性稠油驱替的一维数学模型 ,并进行了解析求解 ,所得结果与一般非牛顿原油的驱替进行了比较 ,着重分析了在非均质地层中原油弛张特性对原油采收率的影响 .分析表明 :一定条件下 ,具有不同渗透率小层的地层内驱替黏弹性原油时 ,其采收率比驱替等黏度牛顿原油的要高 ,并且 ,相对采收率 (水驱黏弹性原油的采收率与驱替等黏度牛顿原油的采收率之比 )
A one-dimension mathematical model for the displacement of visco-elastic heavy oil in heterogeneous reservoir is established, in which the relaxation property of the crude oil is considered. Its analytical solution is also derived. According to the analytical solution, the effect of the relaxation property on oil recovery factor is analyzed. The analyzed result shows that, in heterogeneous reservoir, the recovery factor of the visco-elastic heavy oil displacement is higher than that the recovery factor of Newtonian oil displacement of equal viscosity, and the relationship between relative recovery factor / and formation heterogeneity is not monotonous When the heterogeneity increases, the relative recovery factor increases at first, and then it decreases.
出处
《西安石油学院学报（自然科学版）》
CAS
2002年第4期32-35,共4页
Journal of Xi'an Petroleum Institute（Natural Science Edition)
关键词
采收率
非均质地层
黏弹性稠油
驱替特征
heterogeneity
visco-elastic property
recovery factor
displacement characteristic
