In karst areas, groundwater has high concentrations of carbon dioxide. It causes
decalcification of cement-based materials by reacting with calcium hydroxide and calcium …

The purpose of this study is to examine previous works undertaken that characterise the
cement alteration due to its exposure to CO 2-bearing fluids attacking on the interfaces of …

Among the various risks associated with CO 2 storage in deep geologic formations, wells
are important potential pathways for fluid leaks and groundwater contamination. Injection of …

Understanding long-term property evolution of cement fractures is essential for assessing
well integrity during geological carbon sequestration (GCS). Cement fractures represent …

Abstract Model development in hydrology and geochemistry has been advancing separately
with limited integration. We developed a watershed hydrogeochemical code RT‐Flux‐PIHM …

Long term assurance of the integrity of wellbores is a key objective in well designs. Over
long periods of time, subsurface reactions are inevitable and could compromise the integrity …

An aqueous CO 2–cement interaction experiment along with X-ray computed micro-
tomography characterisation of pre-and post-exposure cement samples was carried out to …

Abstract Underground Hydrogen Storage (UHS), especially in depleted oil and gas
reservoirs is becoming increasingly attractive as a solution to H 2 large-scale seasonal …

Injection of hydraulic fracturing fluid (HFF) into shale formations for unconventional oil/gas
production results in chemical reactions in the shale matrix. Our recent experimental study …

A numerical model was developed with the use of reactive transport code CrunchFlow to
estimate porosity, permeability and mineral composition changes of Mount Simon sandstone …