Dynamic alteration damage to granite by SC-CO2: A proof of concept with an innovative apparatus design

An, Qiyi; Zhang, Qingsong; Zhang, Xiao; Li, Xianghui; Li, Mengtian

doi:10.1016/j.measurement.2021.109969

Measurement

2021

DOI: 10.1016/j.measurement.2021.109969

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Dynamic alteration damage to granite by SC-CO2: A proof of concept with an innovative apparatus design

Qiyi An

Qingsong Zhang

Xiao Zhang

et al.

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Cited by 7 publications

References 59 publications

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Geothermo‐mechanical alterations due to heat energy extraction in enhanced geothermal systems: Overview and prospective directions

Ngoma,

Kolawole,

Olorode

2024

Deep Underground Science and Engineering

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Geothermal energy from deep underground (or geological) formations, with or without its combination with carbon capture and storage (CCS), can be a key technology to mitigate anthropogenic greenhouse gas emissions and meet the 2050 net‐zero carbon emission target. Geothermal resources in low‐permeability and medium‐ and high‐temperature reservoirs in sedimentary sequence require hydraulic stimulation for enhanced geothermal systems (EGS). However, fluid migration for geothermal energy in EGS or with potential CO2 storage in a CO2‐EGS are both dependent on the in situ flow pathway network created by induced fluid injection. These thermo‐mechanical interactions can be complex and induce varying alterations in the mechanical response when the working fluid is water (in EGS) or supercritical CO2 (in CO2‐EGS), which could impact the geothermal energy recovery from geological formations. Therefore, there is a need for a deeper understanding of the heat extraction process in EGS and CO2‐EGS. This study presents a systematic review of the effects of changes in mechanical properties and behavior of deep underground rocks on the induced flow pathway and heat recovery in EGS reservoirs with or without CO2 storage in CO2‐EGS. Further, we proposed waterless‐stimulated EGS as an alternative approach to improve heat energy extraction in EGS. Lastly, based on the results of our literature review and proposed ideas, we recommend promising areas of investigation that may provide more insights into understanding geothermo‐mechanics to further stimulate new research studies and accelerate the development of geothermal energy as a viable clean energy technology.

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Geothermo‐mechanical alterations due to heat energy extraction in enhanced geothermal systems: Overview and prospective directions

Ngoma,

Kolawole,

Olorode

2024

Deep Underground Science and Engineering

View full text Add to dashboard Cite

show abstract

Influence of Mineralogy on Rock Mechanical Behaviour Considering Dynamic Alteration Damage Caused by SC-CO2: A Comparative Study on Different Rock Types

Zhang

et al. 2022

Rock Mech Rock Eng

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Dynamic alteration behavior of granite under SC-CO2: proposal for a long-term accelerated test method

Zhang

et al. 2022

Bull Eng Geol Environ

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Dynamic alteration damage to granite by SC-CO2: A proof of concept with an innovative apparatus design

Cited by 7 publications

References 59 publications

Geothermo‐mechanical alterations due to heat energy extraction in enhanced geothermal systems: Overview and prospective directions

Geothermo‐mechanical alterations due to heat energy extraction in enhanced geothermal systems: Overview and prospective directions

Influence of Mineralogy on Rock Mechanical Behaviour Considering Dynamic Alteration Damage Caused by SC-CO2: A Comparative Study on Different Rock Types

Dynamic alteration behavior of granite under SC-CO2: proposal for a long-term accelerated test method

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