摘要
工业和人类生活过程中排放的温室气体CO2已使全球气候变暖,人类生存的地球环境日趋恶化。世界大部分油田采用水驱开发,将CO2注入水驱开发油田不仅能减轻CO2的排放量,而且可以提高水驱后油藏的原油采收率。通过岩心驱替实验,分析了水驱后油藏在不同地层压力条件下CO2的驱油特征,并对不同地层压力下CO2的埋存量进行了计算。实验结果表明,CO2驱可以很好地提高原油采收率,约15%,地层压力越高,采出率越高,同时证明了水驱后油藏是CO2埋存的理想场所。
Water-flooding is used in most oil fields in the world. The CO2-injection to the water-flooded oil fields will not only reduce the CO2 emission, but also enhance the oil recovery. Through the core displacement experiment, this paper analyzes the CO2 displacement characteristics in water-flooded reservoir under different formation pressures and calculates the CO2 storage capacity. The results show that the COs injection can enhance the oil recovery by about 15%, with higher formation pressure. It is concluded that the water-flooded reservoir is an ideal place for the CO2 storage.
出处
《科技导报》
CAS
CSCD
北大核心
2009年第6期48-50,共3页
Science & Technology Review
基金
国家重点基础研究发展计划(973计划)项目(2006CB705800)
关键词
CO2埋存
水驱油田
地层压力
驱替效率
CO2 storage
water-flooded oil fields
formation pressure
displacement efficiency
