辽河油田蒸汽驱发泡剂助排方案优化研究

针对辽河油田矿场在开发过程中容易出现地层能量下降和汽窜问题,为了达到改善蒸汽驱的开发效果的目的,选择蒸汽驱发泡剂做为研究对象,以静态性能做为评价指标,开展了发泡剂性能评价效果实验。发泡剂注入地层之后会产生大量泡沫,泡沫对于提高采收率起着重大作用。泡沫一方面起到了增大地层压力,可以驱油。另一方面起到了封窜作用。结果表明:发泡剂质量分数在0.4%时发泡性能最佳。此时发泡剂生成的泡沫量达到最理想效果。优选0.5%为该辽河油田的最优发泡剂质量分数。

Study on Optimization of Boosting Scheme of Steam Flooding With Foaming Agent in Liaohe Oilfield

In order to improve the development effect of steam flooding,the foaming agent in steam flooding was chosen as the research object,and the static performance was taken as the evaluation index to carry out the performance evaluation on.After the foaming agent is injected into the formation,a lot of foam will be produced,the foam can play a role in increasing formation pressure and sealing channels.The results show that foaming performance is the best when the mass fraction of foaming agent is 0.4％.At this time the amount of foam generated by the foaming agent reaches the most desirable effect.0.5％ is the optimal foaming agent mass fraction in Liaohe oilfield.