特种油气藏2012，Vol.19Issue(2)：107-109,3.
CO2驱替过程中沥青质沉积及其对原油采收率的影响
摘要
Abstract
CO2 flooding tends to have asphaltene deposition problem, resulting in the change of oil components and affecting oil displacement result. This paper investigates the asphaltene content of different crude oils, the volume of asphaltene deposition under certain core permeability conditions as well as relevant CO2 flooding effects. The relationship between asphaltene deposition and oil recovery factor in CO2 flooding has been studied. The results of experimental study indicate that asphaltene deposition in CO2 flooding process is directly related to core permeability and initial asphaltene content of crude oil; under the same conditions, core permeability is more influential to asphaltene deposition; moreover, with the increasing of asphaltene deposition, the recovery factor of CO2 flooding decreases.关键词
沥青质沉积/CO2驱油/岩心渗透率/原油采收率Key words
asphaltene deposition/ CO2 flooding/ core permeability/ recovery factor分类
能源科技引用本文复制引用
张钧溢,赵凤兰,侯吉瑞,端祥刚,李伟娜..CO2驱替过程中沥青质沉积及其对原油采收率的影响[J].特种油气藏,2012,19(2):107-109,3.基金项目
国家自然科学基金资助项目"CO2在多孔介质中扩散规律的影响因素及机理研究"(50804052) （50804052）
