强化泡沫的封堵调剖性能及矿场试验

针对强非均质油藏和大孔道油藏提高采收率的需要,开展了强化泡沫驱油技术研究。通过室内实验和矿场单井试验,初步评价了强化泡沫体系的封堵调剖能力和驱油效果,探索了强化泡沫驱的注入方式。孤岛油田28-8井区强化泡沫驱矿场试验取得了较好的效果,试验期间注入井注入压力上升,吸水剖面明显改善,6口生产井见到了降水增油效果,累积增产原油1.1×104t,表明强化泡沫驱是一种很有发展潜力的三次采油技术。

The performance of plugging and profile control and field experiment of enhanced foam

Technology of enhanced foam flooding was studied for the purpose of enhancing oil recovery in oil reservoirs with strong heterogeneity and big channel.The capabil-ity of plugging and profile control and oil displacement results of the enhanced foam system were evaluated pri-marily in laboratory and in field individual well,and the injection mode of it was discussed.Favorable effects of the enhanced foam flooding have been achieved in 28-8 well block in Gudao Oilfield.The injection pres-sure increased and the injection profile improved evi-dently in the injection well during the experiment.The oil production increased and the water cut decreased in six producing wells.The cumulative incremental oil production was 1. 1?04t.It shows that the enhanced foam flooding is a kind of tertiary oil recovery technolo-gy with great potential.