马岭油田南一区直3^2油藏剩余油研究

Study on remaining oil distribution of Zhi-32 reservoir in south-1 zone of Maling Oilfield

针对马岭油田南一区直32油藏含水上升加快、产量递减幅度加大的实际,利用数值模拟方法,详细分析研究了该区的生产历史、剩余油分布状况及控制剩余油分布的主要因素.研究结果表明,尽管该区目前采出程度较高,油井综合含水率高,但在单向水驱的边角区、多方受水的挤压区及局部低渗区还具有较多的剩余油,是下一步挖潜的重点区域;油藏边水及储层非均质性是影响剩余油分布的主要因素.

Because the water-cut of the reservoir quickly rises and its production greatly decreases, the production history, the remaining oil distribution and the major factors of controlling remaining oil distribution of this area are studied using numerical simulation method. The study result shows that, although the recovery factor and the water cut of the oilfield are all higher, there is still some remaining oil in its boundary and corner zones, multi-directional water squeezing zones and local low permeability zones, and these zones are the important targets to next exploration. The edge water and the heterogeneity of the reservoir are the main factors of influencing the remaining oil distribution.