重庆大学学报2011，Vol.34Issue(4)：53-57,5.
特低渗油藏CO2非混相驱油特征
Characteristics of immiscible CO2 displacement in extremely low permeability reservoir
摘要
Abstract
The research of characteristics of CO2 flooding in extremely low-permeability reservoirs are of great significance. A linear dimension immiscible CO2 displacement mathematics model considering threshold pressure gradient and characteristics of CO2 which describes extremely low permeability reservoir is established. After numerical resolution, analyze the influence of threshold pressure gradient and characteristics of CO2 on the displacement characteristics of extremely low permeability reservoir. The results show that: the existence of threshold pressure gradient make average gas saturation and gas rate increase rapidly, and then the efficiency of displacement is reduced; during CO2 flooding, the expansion and viscosity reduction of crude oil make effect displacement better. The research has theory direction for the reasonable development of low permeability reservoir.关键词
特低渗透/CO2驱油/非混相/驱替特征Key words
extremely low permeability reservoir/ CO2 flooding/ immiscible displacement/ displacement characteristic分类
能源科技引用本文复制引用
苏玉亮,吴春新,张琪,吴晓东..特低渗油藏CO2非混相驱油特征[J].重庆大学学报,2011,34(4):53-57,5.基金项目
国家"973"资助项目(2006CB705804) （2006CB705804）
泰山学者建设工程专项经费资助项目(TS20070704) （TS20070704）
