Experimental Study of Molecule Diffusion Coefficient for Gas-Oil System
Abstract: During the process of gas flooding, when the gas comes in contact with oil, the mass transfer phenomenon occurs. It change properties and improve flow ability of oil fluid to enhance oil recovery. Diffusion coefficient of gas-oil systems is the most important factor to determine the transfer rate of species from one phase to another. The conven-tional experimental methods used in diffusion coefficient determination are classified into direct and indirect, and the later is used greatly. However, the determination of diffision coefficient requires two important decisions: 1) to define a reliable experimental method; and 2) to choose accurate models for data interpretation. The present paper is aimed at reviewing experimental and modeling studies on diffusion coefficient for gas-oil system, to provide some reference for the future research. The focus of the analysis is three aspects. First, we review the experimental methods of determining diffusion coefficient for gas-oil system. Second, the pressure decay method and models are presented. Finally, we re-view the influencing factors of determining diffusion coefficient.
文章引用: 叶安平 , 沈晓英 , 郭平 , 王绍平 , 程忠钊 (2013) 气体–原油分子扩散系数实验研究进展。 化学工程与技术， 3， 49-56. doi: 10.12677/HJCET.2013.32009
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