断块油田注氮气的研究与实践

Study and Practice of Nitrogen Injection in Fault-Block Oilfield.

针对断块油田水驱开发后期面临高含水的问题,着重介绍了注氮气降水增油机理和在现河断块油田采用氮气吞吐、气水交替驱以及泡沫驱等不同注入方式下的矿场实践情况,分析了影响注气效果的因素,为断块油田注氮气提供了经验。

To the problem of which the fault-block oilfield faces high water-cut in their later water drive period, the mechanism about nitrogen injection to reduce water cut and stimulate, and practical situations of its field application about using different injection means in Xianhe fault-block oilfield is introduced, such as nitrogen soaking, nitrogen-water alternat displacement, foam displacement and so on. Influence factors to nitrogen injection results is also analyzed, which provides experiences of nitrogen injection in fault-block oilfield.