Determination of Diffusion Coefficient for Carbon Dioxide in the Porous Media

doi:10.3696/j.issn.1006-396X.2009.04.010

Journal of Petrochemical Universities ›› 2009, Vol. 22 ›› Issue (4): 38-40.DOI: 10.3696/j.issn.1006-396X.2009.04.010

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Determination of Diffusion Coefficient for Carbon Dioxide in the Porous Media

Enhanced Oil Recovery Research Center, MOE Key Laboratory of Petroleum Engineeringin China University of Petroleum, Beijing 102249,P.R.China

Received:2008-12-08 Revised:2009-03-05 Published:2009-12-25 Online:2009-12-25

CO₂在多孔介质中扩散系数的测定

郭彪,侯吉瑞,于春磊,李东东,林杨

中国石油大学（北京）教育部重点实验室提高采收率研究中心，北京102249

作者简介:郭彪(1982 -), 男, 四川南充市, 在读硕士
基金资助:
国家973 项目(2006CB705805)。

Abstract

Abstract:

The diffusion coefficient of carbon dioxide in the formation for explored oil by carbon dioxide injected was researched. The one-dimension diffusion equation, combined the second Fikes law and continuity equation was deduced. There were some merits: the porous media was stuffed with outcropping sand; the device was placed horizontally, which eliminated the convective diffusion; the simulator is 1 m, which could erase the boundary effect. The derive the diffusion coefficient for diverse pressures under the temperature at 60 ℃. The physical simulator was packed the outcropping sand, which was much more agreeable with the reality. The results can be used for parameter optimization in the field for CO₂ flooding. 

Key words: Carbon dioxide , Diffusion coefficient , Model , One － dimension diffusion , Porous media , Determinatio

摘要： 为了研究注CO2开采原油时CO2在地层中的扩散系数,采用一维扩散的数学模型,利用一维菲克第二定律和连续性方程推导出了CO2扩散系数的计算公式,设计了多孔介质采用露头砂填充,实验模型装置水平放置而消除了“对流扩散”的影响,室内测定CO2扩散系数的双测压点的1m长的物理模拟装置,得出了在60℃时不同压力下的扩散系数,实验条件更符合矿场实际,研究规律可用于矿场CO2驱过程中的参数优选。

关键词: CO２ , 扩散系数 , 模型 , 一维扩散 , 多孔介质 , 测定

GUO Biao, HOU Ji-rui, YU Chun-lei,et al. Determination of Diffusion Coefficient for Carbon Dioxide in the Porous Media[J]. Journal of Petrochemical Universities, 2009, 22(4): 38-40.

郭彪,侯吉瑞,于春磊,李东东,林杨. CO₂在多孔介质中扩散系数的测定[J]. 石油化工高等学校学报, 2009, 22(4): 38-40.

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Determination of Diffusion Coefficient for Carbon Dioxide in the Porous Media

CO₂在多孔介质中扩散系数的测定

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Determination of Diffusion Coefficient for Carbon Dioxide in the Porous Media

CO2 在多孔介质中扩散系数的测定

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CO₂在多孔介质中扩散系数的测定