1) oil-displacement system with ultra-low interfacial tension
超低界面张力驱油体系
2) ultra-low interfacial intension displacement system
超低界面张力体系驱油
1.
There are limitations in the application of classic capillary number theory to the ultra-low interfacial intension displacement system in low-permeability reservoirs,and therefore the modified formula of the capillary number is presented.
针对经典毛管数理论在低渗透油层超低界面张力体系驱替中应用的局限性,在考虑低渗透油层水驱油渗流速度、超低界面张力对油水相对渗透率影响的条件下,给出了毛管数的修正公式;依据均质低渗透岩心超低界面张力体系驱油实验数据绘制了化学驱采收率与毛管数的关系曲线,提出了超低界面张力体系驱替条件下应用毛管数的注意事项,指出了用超低界面张力体系提高水驱低渗透油层采收率的合理途径。
3) ultralow interfacial tension chemical flooding
超低界面张力化学驱油
1.
Study on ultralow interfacial tension chemical flooding in low permeability reservoirs;
低渗透油层超低界面张力化学驱油方式研究