特种油气藏2012，Vol.19Issue(2)：104-106,3.
胜利油田高89区块低渗油藏CO2近混相驱替机理研究
摘要
Abstract
It is difficult to achieve CO2 miscible flooding in low permeability reservoirs and immiscible flooding is low efficiency. The low permeability reservoirs in Block Gao89 of Shengli oilfield are selected to study the feasibility of quasi - miscible CO2 floodingand its mechanism in enhancing oil recovery. PVT and slim tube experiments are conducted to determine the minimum miscibility pressure; the effects of phase behavior on displacement efficiency of CO2 flooding are studied by core displacement experiments; and the EOR mechanism of quasi - miscible CO2 flooding is analyzed by numerical simulation. The results indicate that quasi - miscible flooding is similar to miscible flooding in respects of dissolution and extraction. For those low permeability reservoirs difficult to realize miscible flooding, quasi -miscible flooding is an effective way.关键词
低渗透油藏/近混相/CO2驱/PVT实验/机理/油藏数值模拟Key words
low permeability reservoir/ quasi -miscible/ CO2 flooding/ PVT experiment/ mechanism/ numerical reservoir simulation分类
能源科技引用本文复制引用
郭平,徐阳,牛保伦,章杨,李婷..胜利油田高89区块低渗油藏CO2近混相驱替机理研究[J].特种油气藏,2012,19(2):104-106,3.基金项目
中石化科研攻关项目"大规模CO2驱提高油藏采收率关键技术研究"(P10095) （P10095）
