不平衡对稠油驱替的影响

本文利用摄动法求解了考虑不平衡及毛管力因素时多孔介质中粘弹性非牛顿稠油的两相驱替问题，得到了分流函数及含水饱和度的渐近解析解，所得结果和经典的牛顿流体两相渗流结果进行了比较，并着重分析了不平衡因素对驱替的影响，分析表明：在一定条件下，水驱粘弹性稠油过程中的不平衡可以提高驱替效率，有利于稠油油田的开发。

NON-EQUILIBRIUM EFFECTS ON HEAVY OIL DISPLACEMENT

This paper utilizes perturbation method to deal with the problem of viscoelastic non--Newtonian heavy oil two-phase displacement affected by non-equilibrium and capillary in porous media, providing an asymptotically analytical solution of the fractional flow function and water saturation' The results obtained from the method are compared with those from classical Newtonian two-phase flow, and the effect of non-equilibrium on the displacement is fully discussed. The analysis shows that non--equilibrium in the process of the visco-elastic heavy oil displacement by water can improve displacement efficiency, which is beneficial to the heavy oil field development.