石油化工高等学校学报Issue(5)：55-59,5.DOI:10.3969/j.issn.1006-396X.2015.05.011
非均质性气窜对 CO 2驱油影响量化实验研究
Quantitative Study of the Influence of Heterogeneity Gas Channeling on CO 2 Flooding
摘要
Abstract
For the problem of CO 2 channeling along the fracture direction in 203 well area of Qiaojiawa block,Yanchang oilfield,CO 2 flooding experiment under immiscible and miscible condition is carried out with homogeneous and heterogeneous artificial core.Meanwhile, heterogeneous gas channeling coefficient and oil displacement efficiency lower amplitude are introduced to study the influence of heterogeneity gas channeling on CO 2 flooding quantitatively and analyse the influence of permeability differential and phase behavior on heterogeneity gas channeling.The experiment results show that the influence of permeability differential on heterogeneity gas channeling is obvious and there is a certain sensitive boundary.The sensitive boundary of permeability differential is about 1 5.It is sensitive when the permeability differential is lower than 1 5,and heterogeneous gas channeling coefficient and oil displacement efficiency decrease rapidly with the increasing of permeability differential.It is nonsensitive when the permeability differential is greater than 1 5.The relative strength of fingering gas channeling and heterogeneity gas channeling is bounded to permeability differential of K (3 < K < 1 5 ).When permeability differential is lower than K ,fingering gas channeling is stronger than heterogeneity gas channeling.When permeability differential is larger than K ,heterogeneity gas channeling is stronger than fingering gas channeling.The influence of CO 2 phase behavior on heterogeneity gas channeling is little.关键词
非均质性/气窜/CO2/气窜系数Key words
Heterogeneity/Gas channeling/CO 2/Gas channeling coefficient分类
能源科技引用本文复制引用
杨红,余华贵,江绍静,黄春霞,南宇峰..非均质性气窜对 CO 2驱油影响量化实验研究[J].石油化工高等学校学报,2015,(5):55-59,5.基金项目
国家科技支撑计划项目“CO 2埋存与提高采收率技术”(2012BAC26B03)。 （2012BAC26B03）
