摘要
根据分子动力学基本原理 ,描述了聚合物驱过程中驱油的分子作用力 ,经与水驱的分子作用力对比证明 ,聚合物溶液的粘弹性是聚合物分子与原油分子摩擦力和撞击力的宏观表现 ,聚合物驱能够提高驱油效率。对大庆油田北一区断西试验区相距 3 0m检查水驱效果的北 1 6 检 2 7井和检查聚合物驱效果的北 1 6 检 2 6井进行了密闭取心资料研究 ,由岩心剩余油饱和度密度分布曲线发现 ,聚合物驱较水驱达到残余油饱和度的岩心比例明显增高 ,高含油饱和度的岩心比例明显降低。从而证明 :在相近条件下 ,聚合物驱较水驱既能扩大波及体积 。
Based on molecular dynamics principles,the molecular operation power in polymer flooding is contrasted with that of water flooding.It is concluded that visco?-elastic character of polymer solution is the microscopic behavior of friction and striking forces between polymer molecules and oil molecules,and polymer flooding can enhance oil displacement efficiency.The data of sealing core drilling in B1?6?J27 Well for checking water flooding effectiveness and B1?6?J26 Well away 30 meters from B1?6?J27 Well for checking polymer flooding effectiveness in Duanxi of Bei-1 district in Daqing Oilfield are contrasted.The comparison of the density distribution curves of core residual oil saturation shows that the proportion of core reaching residual oil saturation increased evidently and proportion of core with high saturation for polymer flooding relative to water flooding was reduced distinctly.It is testified that polymer flooding can enlarge the swept volume and enhance oil-displacement efficiency in the similar conditions.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2004年第3期71-74,共4页
Acta Petrolei Sinica
基金
国家自然科学基金资助项目 (No .1 0 1 72 0 2 8)"油层多孔介质内纳米渗流动力学模型"部分成果
关键词
聚合物驱
驱油效率
提高采收率
剩余油分布
分子动力学
polymer flooding
oil-displacement efficiency
enhance oil recovery
residual oil distribution
molecular dynamics
