CO_2辅助蒸汽驱驱油效率实验研究

稠油开发是世界性的大难题。在中国能源紧缺的今天,稠油资源无疑是中国不可忽视的能源之一。传统的稠油开采方法采用的是单一注蒸汽的热力开采方式,但单一的注蒸汽会带来很多的问题,如汽窜、产量递减过快等问题。随着稠油开采技术的进步,发现在蒸汽中加入CO_2会改善注汽效果。本文进行了CO_2辅助蒸汽驱驱油进行了室内研究,通过改变CO_2与蒸汽的注入比、注入段塞的大小、注入速度来确定最优的注入参数。

Study on Oil Displacement Efficiency of CO2-assisted Steam Flooding

Heavy oil is an unconventional oil resource;development of the heavy oil is of great significance to ease China's energy supply.Conventional heavy oil recovery method is the single way of thermal recovery by steam injection,but the single steam injection can cause a lot of problems,such as channeling,rapid production decline,and so on.With the progress of heavy oil recovery technology,it's found that adding CO2 in the steam can improve the steam injection effect.In this paper,CO2 auxiliary steam flooding was studied by changing the ratio of CO2 and steam,injection plug and injection rate;the optimal injection parameters were determined.