油藏数值模拟作为一项成熟技术,已被广泛应用于油田开采中生产措施的调整和方案优化,以及提高采收率等方面。虽然化学驱数值模拟软件众多,但化学驱原理的实现方法基本相同。本文以Eclipse数值模拟软件为例,介绍了聚合物-表面活性剂驱数值模拟的基本原理及实现。在实践基础上,给出了聚合物-表面活性剂二元复合驱数值模拟所需实验室测定参数处理方法以及取值范围,提出了利用数值模拟软件结合二元驱油实验构造毛管减饱和度曲线的新方法,并以实际油田为例进行了参数筛选及敏感性分析:推荐实际区块聚合物注入浓度为1500mg/L,表面活性剂浓度为0.1%。

The reservoir numerical simulation, as a mature technology, is widely used in the adjustment and the optimization of the production measures in the oil exploration, and the oil recovery improvement. Although the numerical simulation softwares of chemical flooding are numerous, but their basic principles and the realization methods are similar. This paper takes the Eclipse numerical simulator as an example, discusses the basic principle and the numerical simulation implementation of the polymer-surfactant flooding, presents the laboratory parameters required and the determination methods. A new method of constructing the capillary desaturation curve is proposed by combining the numerical simulation calculation with the oil displacement experiments, and with a special oilfield as an example, the parameter selection and the sensitivity analysis are shown: the polymer concentration is 1500mg/L, and the surfactant concentration is 0.1%.