大庆石油地质与开发2025，Vol.44Issue(1)：101-106,6.DOI:10.19597/J.ISSN.1000-3754.202308075
注CO2驱提高致密砂岩气藏采收率实验及数值模拟
Experiment and numerical simulation of enhancing recovery of tight sandstone gas reservoir by CO2 injection
摘要
Abstract
In view of problems of rapid formation pressure drop,difficult production stabilization and low gas recov-ery of tight sandstone gas reservoirs,long core flooding experiment,visualization experiment and numerical simula-tion are performed to study displacement and diffusion characteristics of CO2 injection from aspect of enhancing re-covery of gas reservoir.The results show that supercritical CO2 is not widely but"partially miscible"with natural gas.CO2 displaces natural gas upward to be produced during its settlement due to gravitational differentiation.Gas recovery is increased by 17.8 percentage points through CO2 injection.The research provides theoretical basis for further implement of CO2 flooding field test of tight sandstone gas reservoirs.关键词
CO2驱/致密气藏/砂岩气藏/可视化实验/提高采收率/数值模拟Key words
CO2 flooding/tight gas reservoir/sandstone gas reservoir/visualization experiment/enhanced gas recovery/numerical simulation分类
能源科技引用本文复制引用
廖海婴..注CO2驱提高致密砂岩气藏采收率实验及数值模拟[J].大庆石油地质与开发,2025,44(1):101-106,6.基金项目
国家科技重大专项"鄂尔多斯盆地致密低渗油藏注气提高采收率技术"(2016ZX05048-003). （2016ZX05048-003）
