SCCS Seminar: Charlotte Garing — Measuring and modeling of Ostwald Ripening in Residually Trapped CO2

Tuesday, November 14, 2017

3:30 pm

Room 365, Green Earth Sciences Building, 367 Panama Street, Stanford Map

Sponsored by:
Energy Resources Engineering

Measuring and modeling of Ostwald Ripening in Residually Trapped CO2

Dr. Charlotte Garing
Research Associate
Stanford Center for Carbon Storage
Department of Energy Resources Engineering


Despite its major influence on storage capacity, CO2 plume migration rate, and rates of CO2 dissolution and mineralization, residual trapping remains perhaps the least understood of the trapping mechanisms following CO2 injection in geologic formations. Whereas conventional multi-phase flow models assume that the residually trapped non-wetting phase is permanently immobilized, multiple physiochemical mechanisms exist which could potentially invalidate this assumption. One mechanism is CO2 transfer driven by differences in capillary pressure between disconnected neighbor ganglia, called Ostwald Ripening.

This present works investigates i) the potential for Ostwald ripening to remobilize trapped CO2 using synchrotron X-ray microtomography (micro-CT) measurement of trapped gas ganglia capillary pressure and pore-scale modeling of Ostwald ripening mechanism, and ii) the stability of residually trapped scCO2 during the early stages following imbibition CO2 in a sandstone by conducting a drainage-imbibition experiment with reservoir conditions and time-resolved micro-CT imaging. 

When:
Tuesday, November 14, 2017
3:30 pm – 4:15 pm
Where:
Room 365, Green Earth Sciences Building, 367 Panama Street, Stanford Map
Tags:

Environment Engineering Seminar Science 

Audience:
General Public, Faculty/Staff, Students, Alumni/Friends, Members
Contact:
anshula@stanford.edu
More info:
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