空气泡沫驱驱油机理与实验研究

针对传统聚合物驱、三元复合驱等驱油体系在中后期油田开采中采油效率不高的问题,提出一种高效空气泡沫驱驱油技术。为验证高效泡沫驱的驱油效果,以延长油田1#地质条件为背景,探讨不同起泡剂浓度、矿化度下对空气泡沫驱的性能影响,从而筛选出空气泡沫驱的最优综合性能,通过驱替实验,对高效泡沫驱驱油机理进行观察。最后通过封堵能力评价验证了空气泡沫驱的性能与驱油机理。

Mechanism and Experimental Study of Air Foam Flooding

Aiming at the problem that the traditional polymer flooding and three element compound flooding system have low efficiency of oil recovery in the middle and late stage of oil field development, a high efficiency air foam flooding technology has been put forward. In order to verify oil displacement effect of the air foam flooding technology, taking Yangchang oilfield 1# geological conditions as the background, effect of foaming agent concentration and salinity on the performance of air foam flooding was investigated, the optimal comprehensive performance of the air foam flooding was screened out. Finally through microscopic oil displacement experiment, the oil displacement mechanism of efficient foam flooding was studied, and the performance and oil displacement mechanism of air foam flooding were verified by plugging capacity evaluation.