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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Energy Technologies and CO2 Management Symposium
Presentation Title Interfacial Interactions of Self-healing Polymer-cement Composites Exposed to CO2 Using Synchrotron Methods
Author(s) Mohamed Elbakhshwan, Simerjeet Gill, Chonghang Zhao, Yu-chen Karen Chen-Wiegart, Lynne Ecker, M. Ian Childers, Christina Lopano, Barbara Kutchko, Carlos Fernandez
On-Site Speaker (Planned) Mohamed Elbakhshwan
Abstract Scope There is lack of fundamental understanding of kinetics and reaction mechanisms that occur at wellbore cement under extreme conditions such as CO2 storage and enhanced geothermal systems. The dissolution and precipitation reactions that occur need to be understood as they can lead to drastic loss in structural integrity of the wellbore seal, which may limit the economic viability of sequestration. Hence, it is critical to study interfacial interactions to understand the degradation mechanisms involved in subsurface materials. In our approach, we investigated the integrity of a newly designed self-healing polymer-cement composite exposed to CO2 using synchrotron XRF, XANES and CT studies. Self-healing cements have the potential to provide long-term zonal isolation in environmentally demanding subsurface environments. Results showed that the porosity concentration increase with the polymer concentration.
Proceedings Inclusion? Planned:

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