| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
The Impact of Graphene Nanoplatelets (GNPs) on the Hydration Mechanism of Alite (C3S) in Class-H Wellbore Cement with Focus on Microstructural Properties |
| Author(s) |
Havila Jupudi, Cody Massion, Mileva Radonjic |
| On-Site Speaker (Planned) |
Havila Jupudi |
| Abstract Scope |
Cementing the casing for geothermal heat harvesting requires a novel approach for the diverse rock formations such as granite, basalt, and volcanic tuff that constitute geothermal reservoirs. Materials used for latest wellbore cementing technology require stability at high temperatures as production ranges between 160°C and +300°C, be fracture resistant, and resilient to corrosive geofluids that chemically attack ordinary Portland cement (OPC) causing loss in mechanical strength. Graphene nanoplatelets (GNPs) have been shown to improve the mechanical properties when added in low quantities (<1%) to cement, but the mechanism is unclear as it can increase the strength and resistance to fracturing, even under high temperature conditions. To investigate the hydration level of tricalcium silicate (C3S), Class-H wellbore cement mixed with additives suitable for subsurface conditions is used in this study and hydrated with and without GNPs, liquid and powdered, under dynamic thermal loading for 7 and 28 days of hydration. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Other, Other |