低渗油藏CO_2非混相驱油实验研究  

Experiments on CO_2 immiscible flooding in low permeability reservoirs

作　　者：曹建宝[1] 

机构地区：[1]中国石化石油勘探开发研究院,北京100083

出　　处：《内蒙古石油化工》2010年第8期9-10,共2页Inner Mongolia Petrochemical Industry

摘　　要：通过长岩心驱替实验,比较了CO2与N2的驱油效果,进行了不同注入速度下的CO2驱油效率,模拟了不同气水比条件下的水-CO2交替注入情况。研究结果表明:CO2驱驱油效果优于N2;较低的注入速度下,CO2驱油效率较高;水气比较低时,CO2-水气交替注入效果较高。Displacement effects of CO2 and N2 were compared through long core flooding experiments.Simultaneously,CO2 flooding and water-gas alternative injection were investigated.The results show that CO2 is superior to N2 in gas flooding.Low flooding rate contributes to higher displacement efficiency.Low gas-water ratio obtains better oil recovery.

关 键 词：低渗透 CO2驱 注入速度 水气交替注入 

分 类 号：TE357.45[石油与天然气工程—油气田开发工程]