轻油注空气提高采收率技术

EOR technology of air injection to light oil reservoir

汪艳 郭平 Li Jian 张良华

西南石油大学，四川 成都 610500 加拿大卡尔加里大学，加拿大 卡尔加里 四川石油管理局川东开发公司，重庆 401220

低渗透油藏大多属于轻质油藏，轻质油藏注空气已经越来越受到人们的关注。通过调研国内外大量的文献，论述了轻油注空气技术的机理，分析了轻油注空气与重油层内燃烧的区别，阐述了高压注空气室内评价实验。通过实例分析了轻油注空气技术的经济性，并对我国发展轻油高压注空气技术的前景进行了分析。最后指出轻油注空气特别适用于注水开发效果差的低渗及特低渗等采用常规开采方法开发效果差的油藏。

The study on air injection mainly aims at the heavy oil in China, but most of low permeability reservoirs are light oil reservoirs.
Hence, air injection in light oil has got more and more attention. By investigation of a large number of domestic and foreign
literatures, this paper discusses the mechanism of light-oil air injection, analyzes the difference of light-oil air injection and situ
combustion and describes the laboratory experiment of high pressure air injection. At the same time, it also analyzes the feasibility of
economy and predicts the prospect of light oil injection in our country. Finally, it points out that the air injection is especially
suitable to the low permeability reservoirs with poor waterflooding effect and the ultra-low permeability reservoirs which can not be
recovered by using conventional method.