氮气泡沫热水驱提高稠油采收率技术研究

氮气泡沫热水驱是一种新的提高稠油采收率的方法。从室内实验和现场应用两个方面进行研究。在室内实验研究的基础上,提出了氮气泡沫热水驱提高稠油采收率的主要机理。同时,氮气泡沫热水驱和热水驱的对比试验显示,氮气泡沫热水驱不仅可以提高采收率,而且还可以提高采油速度。矿场应用的数值模拟结果显示氮气泡沫热水驱能较大幅度降低油田含水,提高稠油油田的采收率。

Technique for Enhancing Oil Recovery of Viscous Oil by N_2 Foam Hot-water Displacement

N2 foam hot-water displacement is a new method for enhancing recovery of viscous oil, of which experiments are carried out in laboratory and oilfield. On the basis of laboratory study, the main mechanism for enhancing recovery of by using N2 foam hot-water displacement is put forward, and correlation test of the N2 foam hot-water displacement indicates that the technique can be used for enhancing recovery, and increasing production speed. The simulation result of field test shows that oilfield water cut can be reduced greatly with enhanced oil recovery in viscous oilfield.