A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Wettability of calcite under carbon storage conditions
https://orcid.org/0000-0002-6403-2488
Graphical abstract Display Omitted
Highlights Wettability of calcite has been investigated under high-pressure, high-temperature conditions in the context of CO2 storage. Static and dynamic contact angles have been measured for a CO2/brine/calcite system under reaction-free conditions. The influence of pressure, temperature, surface roughness and surface cleanliness have been investigated. Calcite is mainly brine-wet, but can be intermediate-wet or weakly CO2-wet at intermediate pressures.
Abstract Knowledge of interfacial properties, including both fluid-fluid interfacial tension and mineral wettability is essential for accurate simulation of carbon dioxide storage in geological formations. In this context, carbonate reservoirs, especially saline aquifers, are of great interest due to their vast storage capacities; therefore, it is imperative to attain a thorough understanding of their wettability under the high-pressure, high-temperature (HPHT) conditions of CO2 storage. To this purpose, contact angles have been measured for the system CO2 + NaHCO3(aq) + calcite under HPHT conditions. Calcite is representative of limestone minerals and the brine chemistry and molality (1 mol·kg−1) have been chosen to inhibit dissolution reactions. Both static (sessile drop) and dynamic (tilting plate) contact angle measurements were carried out under reaction-free conditions at temperatures from (298 to 373) K and at pressures up to 30 MPa. The influences of surface roughness and cleanliness have also been addressed in this study. We found that calcite is mainly brine-wet, but it can turn intermediate-wet or even weakly CO2-wet at intermediate pressures (around 10 MPa) and low temperature conditions (around 300 K). The results presented in this work may prove useful for characterizing the wettability of a wide variety of calcite (limestone) surfaces that one might expect to encounter in natural reservoirs.
Wettability of calcite under carbon storage conditions
https://orcid.org/0000-0002-6403-2488
Graphical abstract Display Omitted
Highlights Wettability of calcite has been investigated under high-pressure, high-temperature conditions in the context of CO2 storage. Static and dynamic contact angles have been measured for a CO2/brine/calcite system under reaction-free conditions. The influence of pressure, temperature, surface roughness and surface cleanliness have been investigated. Calcite is mainly brine-wet, but can be intermediate-wet or weakly CO2-wet at intermediate pressures.
Abstract Knowledge of interfacial properties, including both fluid-fluid interfacial tension and mineral wettability is essential for accurate simulation of carbon dioxide storage in geological formations. In this context, carbonate reservoirs, especially saline aquifers, are of great interest due to their vast storage capacities; therefore, it is imperative to attain a thorough understanding of their wettability under the high-pressure, high-temperature (HPHT) conditions of CO2 storage. To this purpose, contact angles have been measured for the system CO2 + NaHCO3(aq) + calcite under HPHT conditions. Calcite is representative of limestone minerals and the brine chemistry and molality (1 mol·kg−1) have been chosen to inhibit dissolution reactions. Both static (sessile drop) and dynamic (tilting plate) contact angle measurements were carried out under reaction-free conditions at temperatures from (298 to 373) K and at pressures up to 30 MPa. The influences of surface roughness and cleanliness have also been addressed in this study. We found that calcite is mainly brine-wet, but it can turn intermediate-wet or even weakly CO2-wet at intermediate pressures (around 10 MPa) and low temperature conditions (around 300 K). The results presented in this work may prove useful for characterizing the wettability of a wide variety of calcite (limestone) surfaces that one might expect to encounter in natural reservoirs.
Wettability of calcite under carbon storage conditions
https://orcid.org/0000-0002-6403-2488
Graphical abstract Display Omitted
Highlights Wettability of calcite has been investigated under high-pressure, high-temperature conditions in the context of CO2 storage. Static and dynamic contact angles have been measured for a CO2/brine/calcite system under reaction-free conditions. The influence of pressure, temperature, surface roughness and surface cleanliness have been investigated. Calcite is mainly brine-wet, but can be intermediate-wet or weakly CO2-wet at intermediate pressures.
Abstract Knowledge of interfacial properties, including both fluid-fluid interfacial tension and mineral wettability is essential for accurate simulation of carbon dioxide storage in geological formations. In this context, carbonate reservoirs, especially saline aquifers, are of great interest due to their vast storage capacities; therefore, it is imperative to attain a thorough understanding of their wettability under the high-pressure, high-temperature (HPHT) conditions of CO2 storage. To this purpose, contact angles have been measured for the system CO2 + NaHCO3(aq) + calcite under HPHT conditions. Calcite is representative of limestone minerals and the brine chemistry and molality (1 mol·kg−1) have been chosen to inhibit dissolution reactions. Both static (sessile drop) and dynamic (tilting plate) contact angle measurements were carried out under reaction-free conditions at temperatures from (298 to 373) K and at pressures up to 30 MPa. The influences of surface roughness and cleanliness have also been addressed in this study. We found that calcite is mainly brine-wet, but it can turn intermediate-wet or even weakly CO2-wet at intermediate pressures (around 10 MPa) and low temperature conditions (around 300 K). The results presented in this work may prove useful for characterizing the wettability of a wide variety of calcite (limestone) surfaces that one might expect to encounter in natural reservoirs.
Wettability of calcite under carbon storage conditions
Stevar, Mihaela S.P. (author) / Böhm, Christian (author) / Notarki, Kian T. (author) / Trusler, J.P. Martin (author)
International Journal of Greenhouse Gas Control ; 84 ; 180-189
2019-03-22
10 pages
Article (Journal)
Electronic Resource
English
CO2 storage in carbonates: Wettability of calcite
| Elsevier | 2017
Topotactic crystallisation of calcite under hydrothermal conditions
| British Library Online Contents | 2003