Proceedings of the 2015 International Symposium on Energy Science and Chemical Engineering

Experimental Measurement of CO2 Diffusion Coefficient in Porous Media Using NMR Micro-Imaging

Authors
Junlin Chen, Yuechao Zhao, Yongchen Song, Di Wu, Dayong Wang
Corresponding Author
Junlin Chen
Available Online December 2015.
DOI
https://doi.org/10.2991/isesce-15.2015.67How to use a DOI?
Keywords
Diffusion coefficient; NMR; Porous media; Carbon dioxide
Abstract
In the recent years, using CO2 injection into oil reservoirs to enhanced oil recovery (CO2-EOR) has attracted more and more attention from industry and laboratory experiment. The mass transfer and diffusion of CO2 in oil is one of the key parameters of displacement process. In this study, by employing nuclear magnetic resonance (NMR) and a nonlinear fitting equation, the effective diffusion coefficient is calculated quantitatively. It proved that the experimental apparatus and mathematical procedure employed in this study were reliable to investigate and calculate the diffusion coefficient. Three main conclusions were obtained from this study: (i) the effective diffusion coefficient increases as the initial pressure increases; (ii) the relationship between CO2 diffusion coefficient and pressure is nonlinear;(iii) the temperature effect on diffusion of CO2 in oil is obvious because of the reduction in oil viscosity.
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Proceedings
2015 International Symposium on Energy Science and Chemical Engineering
Part of series
Advances in Engineering Research
Publication Date
December 2015
ISBN
978-94-6252-140-7
ISSN
2352-5401
DOI
https://doi.org/10.2991/isesce-15.2015.67How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Junlin Chen
AU  - Yuechao Zhao
AU  - Yongchen Song
AU  - Di Wu
AU  - Dayong Wang
PY  - 2015/12
DA  - 2015/12
TI  - Experimental Measurement of CO2 Diffusion Coefficient in Porous Media Using NMR Micro-Imaging
BT  - 2015 International Symposium on Energy Science and Chemical Engineering
PB  - Atlantis Press
SN  - 2352-5401
UR  - https://doi.org/10.2991/isesce-15.2015.67
DO  - https://doi.org/10.2991/isesce-15.2015.67
ID  - Chen2015/12
ER  -