论文部分内容阅读
聚合物驱油已经成为某油田稳产的有效技术手段,本文在介绍了实验区块基本情况的基础上,对二类油层不同聚合物驱油注入分子量、注入压力、注入量以及聚合物段塞等相关参数进行了优化,优化结果表明:随着聚合物分子量的增大驱油效果提升;1200万分子量聚合物驱油效果明显优于600万分子量和800万分子量聚合物;低分子量岩心聚合物注入量在0.5PV时注入效果最佳,中分子量岩心聚合物注入量0.5~0.7PV注入效果最佳。
Polymer flooding has become an effective technical means for stable production in an oilfield. Based on the introduction of the basic conditions of the experimental block, the molecular weight, injection pressure, injection amount and polymer slug of polymer flooding in the second type reservoirs The optimization results show that the flooding efficiency increases with the increase of polymer molecular weight. The effect of polymer flooding of 12 million molecular weight is obviously better than that of polymer with molecular weight of 6 million and molecular weight of 8 million. The injection of low molecular weight core polymer When 0.5PV was injected, the best injection efficiency was obtained. The injection amount of polymer with medium molecular weight 0.5 ~ 0.7PV was the best.