摘要
聚合物驱油是化学驱提高采收率的主要方法之一。聚合物的老化作用是影响聚驱效果的重要因素。目前,在数值模拟技术中,能够描述聚合物老化作用的数学/数值模型还鲜见报道。为此,提出了"时间通量"概念,以此建立了考虑聚合物老化作用的油藏数值模型。利用数值模拟,初步探讨了不同老化速度对聚驱效果的影响。研究表明:在油藏数值模拟中需要考虑聚合物的老化作用;聚合物的吸附作用是影响网格内聚合物老化时间曲线形态的重要因素;老化时间曲线的形态也可以反映聚合物在地层中的运移情况。
Polymer flooding was one of the main chemical EOR methods.Polymer aging was the major factor that affected the effect of polymer flooding.In recent numerical technique,the mathematical and numerical models which were capable of describing polymer aging were not reported yet.Therefore,the concept of 'time flux' was proposed,by which a numerical model was established to describe the polymer aging.And the preliminary study was carried out on the influence of aging velocity on the effect of polymer flooding by using numerical simulation.The result indicates that the polymer aging was necessary to be taken into consideration.Polymer adsorption is significant factor affecting the curve shape of aging time in a certain grid.Correspondingly,the curve of aging time is able to reflect polymer displacement as well.
出处
《石油天然气学报》
CAS
CSCD
2012年第12期143-147,10,共5页
Journal of Oil and Gas Technology
基金
国家"973"规划项目(2010CB735505
2012CB724205)
国家科技重大专项(2011ZX05024-004)
关键词
油藏数值模拟
数值模型
聚合物驱
老化作用
采收率
reservoir simulation
numerical simulation
polymer flooding
aging effect
recovery ratio
