The study of rock-CO2Carbon dioxide-fluid chemical interactions is essential to assess storage(CO2) A process for retaining captured CO2, so that it does not reach the atmosphere integrity. It allows evaluation of the injected CO2behaviour, and thus provides a guide for monitoringMeasurement and surveillance activities necessary for ensuring safe and reliable operation of a CGS project (storage integrity), and for estimating emission reductions during and after injectionThe process of using pressure to force fluids down wells. Storage(CO2) A process for retaining captured CO2, so that it does not reach the atmosphere integrity issues which may be addressed by reactive transport modelling of CO2Carbon dioxide and fluid flow in the subsurface include: confinement in the injectionThe process of using pressure to force fluids down wells zone, CO2Carbon dioxide partitioning into the rock and fluid phases via mineralisationIs a natural form of geologically storing CO2 by the very slow reaction between CO2 and naturally occurring minerals, such as magnesium silicate, to form the corresponding mineral carbonate and dissolution, and potential impacts to groundwater from CO2Carbon dioxide leakage(in CO2 storage) The escape of injected fluid from the storage formation to the atmosphere or water column.
In the previous chapter, various modelling codes allowing the modelling of chemical processes in the subsurface have been described. These models range from equilibrium models, reaction-path models and kinetic models, to coupled reactive transport models. Reactive transport models account for the coupling between transport and chemical reaction. They are thus more computationally intensive than non-coupled codes because of additional reactions, multiple variables and associated degrees of freedom (NETL, 20112011 - NETLRisk Analysis and Simulation for Geologic Storage of CO2, Version 1.0see more).
Gaus et al., 20082008 - I. Gaus, P. Audigane, L. André, J. Lions, N. Jacquemet, P. Durst, I. Czernichowski-Lauriol and M. AzaroualGeochemical and solute transport modelling for CO2 storage, what to expect from it?see more have identified three main application domains when assessing the geochemical impact of CO2Carbon dioxide storage(CO2) A process for retaining captured CO2, so that it does not reach the atmosphere. They are presented in the following sub-sections.