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CouFrac 2022 Conference

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THM processes in thermal and gas storage in geological formations

Hejuan Liu, Institute of Rock and Soil Mechanics
Chinese Academy of Sciences, China [email protected]
Pengzhi Pan, Institute of Rock and Soil Mechanics
Chinese Academy of Sciences, China [email protected]
Zhaofeng Wang, Institute of Rock and Soil Mechanics
Chinese Academy of Sciences, China [email protected]

The thermal and gas underground storage has attracted more and more attention worldwide in recent ten years. The gas underground storage mainly includes CH4, H2, He, CO2 and H2S. Among them, the underground storage of CH4 and H2 is for the energy requirement, while the CO2 and H2S subsurface storage is helpful for the environmental friendly purpose in the long term. Both the thermal and gas storage have some similar operation in geological formations, such as well drilling, cementation and completion, liquid or gas injection, monitoring etc. Complicated coupled THM processes (e.g. heat transfer, fluid migration in porous or fractured media, mechanical deformation or failure of the reservoir-caprock system) after thermal or gas injection underground occur at different scales from pore scale to basin scale, causing fingering effect, overriding effect, water blocking effect, seal failure problem of wellbore, caprock and faults, which may affect the storage efficiency and long term safety operation. In this session, we welcome contributions that advance the understanding of coupled THM processes in the geosystem related to thermal and gas underground storage by novel experimental and numerical methods.

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