@inproceedings{c98211a9c70944d0b8eb1e0b9f2b1c51,
title = "Subsurface CO 2 leakage: Lab-scale study of salient characteristics and assessment of borehole-based detection using resistivity tomography",
abstract = "A unique laboratory facility is developed for the observation of subsurface CO 2 leakage evolution. A thin transparent tank is filled with different sizes of glass-beads to form controlled layered stratigraphies; then the medium is saturated with water mixed with a universal pH indicator. The flowcontrolled injection of CO 2is carefully controlled using pressure transducers with precise needle valve and, time-lapse photography permits capturing the evolution of gas invasion and diffusion. Results show the nature of CO 2 gas migration in the near surface, the effect of fine-grained layers such as the cap-rock, water acidification near conduits and subsequent diffusion, the convection of carbonated water. In addition to this trial to understand salient characteristics on subsurface CO 2 leakage, applicability of borehole based resistivity tomography is assessed. Measurement system for resistivity tomography is attached to the CO 2gas migration monitoring system. Produced resistivity images are compared with time-lapse digital images taken during CO 2 gas leakage simulation.",
keywords = "CO leakage, Carbonated water, Convection, Diffusion, Monitoring, Resistivity tomography",
author = "Bang, {E. S.} and Son, {J. S.} and Santamarina, {J. C.}",
year = "2013",
language = "English (US)",
isbn = "9780415660709",
series = "Geotechnical and Geophysical Site Characterization 4 - Proceedings of the 4th International Conference on Site Characterization 4, ISC-4",
pages = "1441--1446",
booktitle = "Geotechnical and Geophysical Site Characterization 4 - Proceedings of the 4th International Conference on Site Characterization 4, ISC-4",
note = "4th International Conference on Site Characterization, ISC'4 ; Conference date: 18-09-2012 Through 21-09-2012",
}