Study on Minimum Miscible Pressure and Oil Displacement Law for CO2 Flooding

被引：1
|
作者：
Chen Shuli [1 ]
Wu Wenxiang [2 ]
Tang Jiabin [2 ]
机构：
[1] Northeast Petr Univ, Daqing Oilfeld Ltd Co, Daqing 163318, Heilongjiang, Peoples R China
[2] Northeast Petr Univ, Daqing, Heilongjiang 163318, Peoples R China
来源：
CHEMICAL ENGINEERING AND MATERIAL PROPERTIES, PTS 1 AND 2 | 2012年 / 391-392卷
关键词：
CO2; flooding; Minimum miscible pressure; Displacement efficiency; CO2-oil exchange rate; Injection capacity;
D O I：
10.4028/www.scientific.net/AMR.391-392.1051
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
In laboratory, the minimum miscible pressure (M MP) of oil and CO2 was studied by using a slim tube model. The results showed that the greater the gas injection pressure, the higher the cumulative recovery. The gas breakthrough when the gas was injected with a volume of 0.7 similar to 0.8PV, the trend of cumulative recovery increase slowed down and the produced gas-oil ratio increased dramatically. Core flooding experiments were carried to compare the effects of CO2 and water flooding. As a result, the ultimate oil recovery of CO2 flooding increased with the increase of gas injection pressure. If the gas flooding was miscible, the ultimate recovery of CO2 flooding was generally higher than that of water flooding.
引用
收藏
页码：1051 / +
页数：2
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