西南石油大学学报（自然科学版）2011，Vol.33Issue(4)：135-138,4.DOI:10.3863/j.issn.1674-5086.2011.04.025
粘弹性流体驱替残余油微观力计算
摘要
Abstract
To further explore the displacement mechanism of flexibility of the polymer to the residual oil, upper-convected Maxwell constitutive equation is selected, and flow equations of the viscoelastic fluidflow in porous road are established. The horizontal deviatoric stress difference on the residual film iscalculated on the basis of the stress tensor theory. The impacts of the different rheological fluid, thewidth of oil film, and pressure gradient on the horizontal deviatoric stress difference on the residualfilm are analyzed and compared. The results show that: When flooding with water, power law fluid (n = 0.6)and viscoelastic fluid (We = 0.3), the ratio of horizontalde-viatoric stress difference on the residual filmis about 1: 10: 25 at actual oil production mean pressure gradient of 0.02 Mpa/m, which means that the driving force of viscoelastic fluid (We = 0.3) on the film is about 25 timesthe water flooding. This innovative conclusion that the microscopic displacement efficiency can be improved byviscoelastic fluids is further proved theoretically.关键词
粘弹性流体/残余油/微观力/驱油效率/弹性Key words
viscoelastic fluid/ residual Oil/ micro force/ displacement efficiency/ flexibility分类
能源科技引用本文复制引用
王春生,杨树人,刘丽丽..粘弹性流体驱替残余油微观力计算[J].西南石油大学学报（自然科学版）,2011,33(4):135-138,4.基金项目
国家重点基础研究项目973”计划(2005CB221304). （2005CB221304）
