中国石油大学学报（自然科学版）2011，Vol.35Issue(5)：134-138,5.DOI:10.3969/j.issn.1673-5005.2011.05.025
聚合物黏弹性提高驱油效率研究
Research on improving oil displacement efficiency using viscoelastic behavior of polymer
摘要
Abstract
Some physical simulation experiments were conducted. The effects of the first normal stress difference N1, the slope of the first normal stress difference SN1 and Wesson Borg number on oil displacement efficiency and residual oil saturation based on slightly oleophilic artificial physical model were studied. Under the same viscosity conditions, the oil displacement efficiency was investigated. Two high-concentration polymer flooding field tests were carried out in Daqing Oilfield. The results demonstrate that with the increase of the first normal stress difference, the slope of the first normal stress difference and Wesson Borg number, the oil displacement efficiency increases and residual oil saturation decreases. Under the same viscosity conditions, the oil displacement efficiency of polymer flooding was higher than that of the glycerol flooding significantly because of the elasticity of polymer. The oil recovery efficiency is greatly improved because of high viscoelastic behavior of high concentration polymer.关键词
黏弹性/第一法向应力差/第一法向应力差斜率/威森伯格数/驱油效率/残余油饱和度/矿场试验Key words
viscoelasticity/ the first normal stress difference/ slope of the first normal stress difference/ Wesson Borg num-ber/ oil displacement efficiency/ residual oil saturation/ field test分类
能源科技引用本文复制引用
吴文祥,王德民..聚合物黏弹性提高驱油效率研究[J].中国石油大学学报（自然科学版）,2011,35(5):134-138,5.基金项目
“973”国家重点基础研究发展计划项目(2005CB221300) （2005CB221300）
