摘要
以ZH油田为例,通过数值模拟技术对聚合物驱聚合物溶液的合理粘度进行研究。增大聚合物溶液粘度有以下影响:一可以降低驱替液流度,改善水油流度比,利于提高采收率;二可以降低驱替液的注入能力,使注采达不到平衡,降低地层压力,反而会降低采收率。在确定聚合物驱驱替液粘度时不仅要考虑流度控制,还应考虑驱替液的注入性。
Taking ZH oil field for example,the reasonable viscosity is studied during the polymer flooding process using numerical simulation method.The results show that the effects of increasing polymer viscosity on oil recovery are as follows：one side,the polymer mobility will deduce,and the mobility ratio between oil and water will be improved,then the oil recovery will be enhanced;on the other hand,water injectivity also will be deduce,the injection and production balance will be broken,then the formation pressure will decrease,finally the oil recovery will decrease.Therefore,not only the mobility but also the water injectivity should be taken into account while deciding the polymer viscosity during the polymer flooding process.
出处
《重庆科技学院学报（自然科学版）》
CAS
2011年第2期12-14,29,共4页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
国家973项目(2006CB705808)
关键词
聚合物驱
合理粘度
流度比
波及系数
地层压力
polymer flooding
reasonable viscosity
mobility ratio
sweep efficiency
formation pressure
