Gas Hydrate-Assisted CO2 Storage in Subsurface Systems

Abstract The Hydrate-based CO2 Storage/Sequestration technique has the potential to contribute to achieving Sustainable Development Goal (SDG) 13 by enabling efficient and safe storage of CO2. This paper explores the potential of CO2 storage through gas hydrate formation in depleted hydrocarbon reservoirs, an innovative approach to mitigating climate change by reducing atmospheric CO2 levels. The current applications and potentials of gas hydrates are examined, highlighting their role in energy production, CO2 reduction via oceanic injection, energy storage, and other uses. Geological considerations are analyzed, emphasizing the self-sealing potential of CO2 hydrates, the mechanisms of CO2 sequestration through hydrate formation, and the impact of hydrate presence on reservoir permeability. Simulation studies provide insights into the feasibility and efficiency of this method. Various approaches for CO2 hydrate sequestration are discussed, outlining the practical steps and technological requirements involved. The environmental implications and potential challenges of CO2 hydrate sequestration are evaluated, considering the ecological impacts and long-term sustainability. This comprehensive review suggests that while CO2 storage through gas hydrate formation in depleted hydrocarbon reservoirs holds significant promise, it necessitates further research and technological advancements to address the identified challenges and fully realize its potential as a viable climate mitigation strategy.