摘要
聚合物属于非牛顿流体,在实际注聚合物过程中,除了流体的非牛顿性外,还存在多种物理化学机理。考虑注聚合物过程中的扩散和对流等机理,建立了聚合物分布方程,结合黏度与体积分数的关系建立了考虑扩散和对流的聚合物驱试井模型,采用有限差分法对渗流方程组数值求解。计算结果表明,不考虑扩散和对流时初始注入聚合物质量浓度越大,试井压力曲线及压力导数曲线上翘越大,当考虑扩散和对流时,试井压力曲线及压力导数曲线上翘幅度要小。
Polymer is a non-Newtonian fluid. In fact, there are physical and chemical mechanisms along with the feature of non-Newtonian. With consideration of dispersion and convection, the concentration distribution equation was provided. Combined with the relationship of viscosity and concentration, the polymer flooding well test model was established considering dispersion and convection. The finite difference method was used to solve equations. It shows, considering dispersion and convection, pressure curve and its derivative curve turned upward higher than those of curves without considering dispersion and convection.
出处
《石油钻探技术》
CAS
北大核心
2010年第1期16-19,共4页
Petroleum Drilling Techniques
基金
国家高技术研究发展计划("863"计划)项目"特殊结构井开发油藏工程技术"(编号:2006AA09Z338)资助
关键词
注聚合物
试井
扩散
对流
压力曲线
polymer water flooding
well testing
diffusion
convection
pressure curve
