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研究化学采油中聚合物-表面活性剂二元复合驱数值模拟问题。数学模型包含压力方程、组分浓度方程以及基于水相组分浓度方程形成的水相饱和度方程。提出了一种隐式顺序解法。先隐式求解压力方程,再隐式求解水相饱和度方程,最后隐式求解组分浓度方程;通过聚合物驱和二元复合驱模拟,对该隐式算法与传统的隐式压力-显式浓度算法进行了比较。该隐式算法稳定性好,提高计算效率大约30%。
Study on Numerical Simulation of Polymer-Surfactant Binary Composite Flooding in Chemical Production. The mathematical model includes the pressure equation, the component concentration equation, and the water phase saturation equation based on the water component concentration equation. An implicit sequential solution is proposed. The pressure equation is first implicitly solved, then the water saturation equation is implicitly solved, and finally the concentration equation of the component is implicitly solved. By means of polymer flooding and binary compound flooding simulation, the implicit algorithm is compared with the traditional implicit pressure- The concentration algorithm is compared. The implicit algorithm has good stability and improves computational efficiency about 30%.