网络出版日期: 2012-10-20
基金资助
国家自然科学基金项目“多孔介质中CO2-多组分原油非平衡扩散理论研究”(编号:21143011)和高校博士点基金项目“高温高压 多组分凝析气非平衡相态理论模型研究”(编号:20115121110002)联合资助。
Study on gas-oil diffusion coefficient in porous media under high temperature and high pressure
Online published: 2012-10-20
杨璐 , 贺振华 , 文晓涛 , 杨小江 , 盛秋红 . 多孔介质高温高压多组分气体-原油分子扩散系数研究[J]. 岩性油气藏, 2012 , 24(5) : 111 -115 . DOI: 10.3969/j.issn.1673-8926.2012.05.021
The study ofmolecular diffusion coefficient for gas-oil systemfocuses mostly on the single gas-oil system, and the diffusion coefficient is measured in the PVT tube under lowpressure or lowtemperature. Under the circumstances, this paper tested the effective diffusion coefficient between the gas injected and oil in porous media under high temperature and pressure, and also tested the diffusion coefficient of gas-condensate oil systemand gas-heavy crude oil systemin the full diameter core under 60℃and 20MPa respectively. The results showthat the components of crude oil have a little influence on the diffusion coefficient. The gas diffusion coefficient in condensate oil is higher than that in heavy oil. The diffusion coefficient follows a power function and increases with the increasing of time, and the curve flattens gradually finally.
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