Magnetic Resonance Imaging Study on the Miscibility of a CO2/n-Decane System

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2011,（9）
• 页码范围: 209-212
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/28/9/096401

摘要

We provide a feasible method to estimate the minimum miscibility pressure(MMP)of a CO2/n-decane system by using high spatial resolution magnetic resonance imaging(MRI).During the measurement,the signal intensity of n-decane with CO2 dissolved is measured.The MRI images show that the signal intensity of n-decane decreases to zero and the interface disappears at the MMP.A good exponential growth relation is found between the signal intensity and the pressure of the CO2/n-decane system.The relationship between the MMP and the temperature is established quantitatively,which is in close agreement with previous studies.Moreover it could be used to predict the MMP of the CO2/n-decane system.