A comprehensive review of value-added CO2 sequestration in subsurface saline aquifers

Abstract

This paper comprehensively reviews CO2 sequestration process in saline aquifers. The storage mechanisms including structural, residual, solubility, and mineral trappings are assessed along with a discussion of their relative contributions, and their key parameters and optimisations. In view of storage security and capacity, effects of rock and fluid properties and reservoir conditions together with injection strategies are discussed. Furthermore, CO2 storage site selection is investigated followed by an evaluation of the different measurement, monitoring and verification methods to mitigate the risk of leakage. Field examples with key learnings are also presented to help engineers with sustainable development of storage projects.

Numerical Simulations of Carbon Dioxide Storage in Selected Geological Structures in North-Western Poland

“…The selection of a suitable underground geological formation for permanent CO 2 storage must be preceded by a detailed characterisation and assessment of the potential storage reservoir and the surrounding rock mass (Buscheck et al, 2012;Tokarski et al, 2021). The characterisation of the dynamic behaviour of carbon dioxide stored in the rock mass is an important step in the process of evaluating a potential CO 2 reservoir (Kumar et al, 2020). Numerical modelling includes a series of simulations of the CO 2 injection process into the storage site using a 3D static geological model of the rock mass.…”

Advancing measurements and representations of subsurface heterogeneity and dynamic processes: towards 4D hydrogeology

“…While the surface components of continental water, such as streams, lakes and glaciers, are a very familiar part of our landscape, the vast majority of continental water resources resides and flows in the subsurface, and is thus generally inaccessible to direct observation (McDonnell, 2017). Growing societal needs imply that subsurface environments, which form part of the critical zone of the Earth (Brantley et al, 2007;Fan et al, 2019), are increasingly subject to pressure and multiple (possibly competing) uses for water resources such as groundwater abstraction, artificial recharge and storage (Dillon et al, 2019;Russo and Lall, 2017;Aeschbach-Hertig and Gleeson, 2012), nuclear waste storage (e.g., Ewing, 2015, Butler, 2010, geothermal energy (Rivera et al, 2017;Fleuchaus et al, 2018;Lu, 2018), oil and gas extraction (e.g., Wang et al, 2014) and climate change mitigation such as energy storage (Arbabzadeh et al, 2019) and CO2 sequestration (Hamza et al, 2021, Kumar et al, 2020 while being threatened by anthropogenic contamination (e.g., Riedel et al, 2020). As a result, subsurface systems are experiencing profound modifications that affect their basic environmental functions and ecosystem services (Erostate et al, 2020;Fattorini et al, 2020;Luijendijk et al, 2020).…”

Influence of Caprock Morphology on Solubility Trapping during CO2 Geological Sequestration

“…A review on geological CO 2 sequestration by Kumar et al [22] highlighted the existing gaps in the present research regarding trapping mechanisms and site characterization. Over the past decade, the research on structural trapping has mainly focused on elucidating storage capacity and integrity [22][23][24].…”

“…A review on geological CO 2 sequestration by Kumar et al [22] highlighted the existing gaps in the present research regarding trapping mechanisms and site characterization. Over the past decade, the research on structural trapping has mainly focused on elucidating storage capacity and integrity [22][23][24]. In residual trapping research, studies on pore size, heterogeneity, injection strategies, and resident brine density have been conducted predominantly to analyze and increase the residual trapping efficiency [16,22,25].…”