Experimental Measurement of CO2 Diffusion Coefficient in Porous Media Using NMR Micro-Imaging
- Junlin Chen, Yuechao Zhao, Yongchen Song, Di Wu, Dayong Wang
- Corresponding Author
- Junlin Chen
Available Online December 2015.
- https://doi.org/10.2991/isesce-15.2015.67How to use a DOI?
- Diffusion coefficient; NMR; Porous media; Carbon dioxide
- 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.
- 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 -