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Title: Supercritical CO 2 Water Displacements and CO 2 Capillary Trapping: Micromodel Experiment and Numerical Simulation (in Chinese)

Abstract

We report that the CO 2 capillary trapping is an important scientific issue in geological carbon sequestration, but few researches focus on the trapping mechanism at pore scale under supercritical CO 2 condition. In this study, based on the high-pressure fluids-microscopy-micromodel experimental system, we performed drainage experiment, i.e. supercritical CO 2 displacing water, and imbibition experiment, i.e. water displacing CO 2, under the conditions of 45°C and 8.5 MPa. The DSLR camera was used to capture pictures of CO 2-water two-phase immiscible flow and the microscopy was used to capture the capillary trapping behavior for the supercritical CO 2 at the pore scale. The computational fluid dynamic method was adopted to simulate the two-phase fluid flow processes. The numerical results are generally in agree ment with the experimental observations, and further provide three-dimensional geometries on the interface during the drainage-imbibition processes and the trapped supercritical CO 2 droplet/cluster. Lastly, the capillary trapping curve, i.e. the relationship between the initial CO 2saturation and the residual saturation, was obtained from the numerical results, and we made an assessment of the three capillary trapping models, i.e. Land's, Jurauld's and Spiteri's trapping models. A comparison of the models performance indicates that Jurauld's model behavesmore » slightly better than Land's model, whereas Spiteri's model behaves poorly. However, given that Land's model only contains one parameter of clear physical meaning, it is recommended for practical use.« less

Authors:
 [1];  [2];  [3];  [2]
  1. Wuhan Univ. (China); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Wuhan Univ. (China)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1485063
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Chinese Journal of Theoretical and Applied Mechanics
Additional Journal Information:
Journal Volume: 49; Journal Issue: 3; Journal ID: ISSN 0459-1879
Publisher:
Science Press
Country of Publication:
United States
Language:
Chinese
Subject:
58 GEOSCIENCES; geological carbon sequestration; micromodel; two-phase flow; numerical simulation; capillary trapping

Citation Formats

Ran, Hu, Yifeng, Chen, Jiamin, Wan, and Chuangbing, Zhou. Supercritical CO2 Water Displacements and CO2 Capillary Trapping: Micromodel Experiment and Numerical Simulation. United States: N. p., 2017. Web. doi:10.6052/0459-1879-16-237.
Ran, Hu, Yifeng, Chen, Jiamin, Wan, & Chuangbing, Zhou. Supercritical CO2 Water Displacements and CO2 Capillary Trapping: Micromodel Experiment and Numerical Simulation. United States. doi:10.6052/0459-1879-16-237.
Ran, Hu, Yifeng, Chen, Jiamin, Wan, and Chuangbing, Zhou. Thu . "Supercritical CO2 Water Displacements and CO2 Capillary Trapping: Micromodel Experiment and Numerical Simulation". United States. doi:10.6052/0459-1879-16-237. https://www.osti.gov/servlets/purl/1485063.
@article{osti_1485063,
title = {Supercritical CO2 Water Displacements and CO2 Capillary Trapping: Micromodel Experiment and Numerical Simulation},
author = {Ran, Hu and Yifeng, Chen and Jiamin, Wan and Chuangbing, Zhou},
abstractNote = {We report that the CO2 capillary trapping is an important scientific issue in geological carbon sequestration, but few researches focus on the trapping mechanism at pore scale under supercritical CO2 condition. In this study, based on the high-pressure fluids-microscopy-micromodel experimental system, we performed drainage experiment, i.e. supercritical CO2 displacing water, and imbibition experiment, i.e. water displacing CO2, under the conditions of 45°C and 8.5 MPa. The DSLR camera was used to capture pictures of CO2-water two-phase immiscible flow and the microscopy was used to capture the capillary trapping behavior for the supercritical CO2 at the pore scale. The computational fluid dynamic method was adopted to simulate the two-phase fluid flow processes. The numerical results are generally in agree ment with the experimental observations, and further provide three-dimensional geometries on the interface during the drainage-imbibition processes and the trapped supercritical CO2 droplet/cluster. Lastly, the capillary trapping curve, i.e. the relationship between the initial CO2saturation and the residual saturation, was obtained from the numerical results, and we made an assessment of the three capillary trapping models, i.e. Land's, Jurauld's and Spiteri's trapping models. A comparison of the models performance indicates that Jurauld's model behaves slightly better than Land's model, whereas Spiteri's model behaves poorly. However, given that Land's model only contains one parameter of clear physical meaning, it is recommended for practical use.},
doi = {10.6052/0459-1879-16-237},
journal = {Chinese Journal of Theoretical and Applied Mechanics},
number = 3,
volume = 49,
place = {United States},
year = {2017},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
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Figures / Tables:

Fig. 1 Fig. 1: High-pressure fluids-microscopy-micromodel system

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