石油钻采工艺2016，Vol.38Issue(4)：499-503,544,6.DOI:10.13639/j.odpt.2016.04.018
油藏条件下聚合物溶液老化数学模型新探
A new mathematical model for polymer solution aging at reservoir conditions
摘要
Abstract
Polymer aging and degradation is an important factor influencing the effect of polymer flooding in high-temperature oil reservoirs. When the effect of polymer aging and degradation on flooding effect is evaluated by means of reservoir numerical simulation, it is critical to establish the mathematical model for polymer aging and degradation. The viscosity correction model at reservoir condi-tions was built by using the first-order ordinary differential equation of polymer aging and degradation. Then, the partial differential equation for describing the variation of polymer viscosity at reservoir conditions was presented. Combined with the mass conservation equation of polymer, it is proved that the viscosity correction model is feasible if the viscosity-concentration relation is polynomial. The viscosity correction model reveals the influential process of degradation and flowing of polymer on its viscosity at any point of oil reservoir, and describes the physical phenomenon of viscosity reduction with constant mass concentration in the process of polymer ag-ing and degradation. Compared with the viscosity models used in current commercial numerical simulators, this model can present the physical flowing of polymer in porous media more actually. The derivation and demonstration of viscosity correction model provides the theoretical support for the numerical simulation study of polymer aging and degradation.关键词
聚合物驱/聚合物老化/黏度修正模型/油藏数值模拟Key words
polymer flooding/polymer aging/viscosity correction model/reservoir numerical simulation分类
能源科技引用本文复制引用
李俊键,姜汉桥,陆祥安,赵玉云,常元昊,王依诚..油藏条件下聚合物溶液老化数学模型新探[J].石油钻采工艺,2016,38(4):499-503,544,6.基金项目
国家科技重大专项“海上油田聚合物驱油藏动态监控与评价技术研究”（编号2011ZX05024-004-07）；国家重点基础研究发展计划（“973”计划）“致密油高效开发油藏工程理论与方法研究”（编号2015CB250900）。 （）
