聚合物驱流线模拟中的更新流线问题

Streamline Updating in Streamline Simulation of Polymer Flooding

考虑了聚合物驱过程中黏度变化和岩石吸附效应,建立聚合物驱流线模型,并编写了相应的聚合物驱流线模拟程序,重点考察了聚合物驱替过程中流线更新的作用,并与商业模拟器进行了对比。研究表明,聚合物驱过程中的流场变化不可以忽略,固定流线的假设会产生较大的误差,而更新流线可以得到更加精确的结果。对平面五点井网聚合物驱过程的模拟表明,改进的后流线模拟方法可以更好地运用于聚合物驱提高采收率过程的预测。

Considering the viscosity variation and absorption effect in polymer flooding,the paper establishes polymer streamline model and compiles the program of the streamline simulation of polymer flooding,in which streamline updating is mainly examined in polymer flooding;and comparison is made with commercial simulator.The study shows that the flow field variation in polymer flooding can’t be neglected;the assumption of fixed streamline can cause relatively large error;and updating streamline can get a more accurate result.The simulation of polymer flooding with plane 5-spot well pattern shows that the streamline simulation method that is improved can be better applicable to the prediction of EOR of polymer flooding.