CO_2驱油过程中储层堵塞实验研究  

Experimental studies on reservoir blocking during CO_2 flooding

作　　者：林冬娟 林冬萍[1] 

机构地区：[1]中油吉林油田分公司,吉林松原138000

出　　处：《石化技术》2015年第8期183-183,179,共2页Petrochemical Industry Technology

摘　　要：CO2驱油过程中,CO2与水、岩石、原油发生物理化学反应,生成沉淀或溶蚀岩石,导致储层渗透率和孔隙度降低或增大。通过长岩心驱替实验,分析CO2驱油过程中岩心物性变化的规律和不同驱替条件下导致物性变化的原因。CO2reacts with oil,rock and water during CO2flooding to produce deposits or denudated rock,which lead to fluctuation of permeability and porosity of a reservoir.Long core displacement experiments are carried out to discover the causes and laws of physical properties changes of the core during different displacement conditions.

关 键 词：CO2驱 物性变化 储层堵塞 无机沉淀 沥青质沉淀 

分 类 号：TE357.7[石油与天然气工程—油气田开发工程]