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Pore-Scale Investigation of Gas Exsolution from CO2/Water Solution during A Depressurization Process Relevant to Carbon Sequestration


EMSL Project ID
46002

Abstract

A microscopic investigation of exsolution of CO2 from CO2 saturated brines is proposed. Exsolution of CO2 poses a poorly understood risk for geological sequestration of CO2 if saturated brines migrate to regions with lower pressures. Core scale laboratory studies have shown extremely low mobility of exsolved gas phase and a large water mobility reduction due to the presence of exsolved gas phase (Zuo et al., 2011). Experiments conducted on a pore scale will reveal the evolution of an exsolved gas phase and give insights to the mechanism of the corresponding mobility reduction.

Project Details

Project type
Exploratory Research
Start Date
2011-10-19
End Date
2012-10-21
Status
Closed

Team

Principal Investigator

Sally Benson
Institution
Stanford University

Related Publications

Zuo L, C Zhang, RW Falta, and SM Benson. 2013. "Micromodel Investigations of CO2 Exsolution from Carbonated Water in Sedimentary Rocks." Advances in Water Resources 53:188-197. doi:10.1016/j.advwatres.2012.11.004