Mechanical Behavior of Sandstone Pressurized with Supercritical CO
            <sub>2</sub>
            and Water under Different Confining Pressure Conditions

Zhang, Qiang; Wu, Ye; Chen, Yonghong; Li, Xiaochun; Hu, Shaobin

doi:10.1061/(asce)gm.1943-5622.0002061

Cited by 8 publications

(1 citation statement)

References 41 publications

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“…The dissolution or precipitation of minerals along fault planes is crucial in determining slip potential and the load-bearing capacity of the faulted surface [17,116]. Studies on the chemical interaction of the commonly injected supercritical CO 2 with host rocks have shown increased ductility and reduced cohesion in sandstones [117]. While research has been conducted on the CO 2 enriched brine interaction with sandstone and carbonate reservoirs, there is still a need for investigations into the chemical interaction of H 2 with reservoir rocks.…”

Section: Chemical Reactivity Of Pore Fluid and Host Rockmentioning

confidence: 99%

Comprehensive review of geomechanics of underground hydrogen storage in depleted reservoirs and salt caverns

Ramesh Kumar,

Honorio,

Chandra

et al. 2023

Preprint

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Hydrogen is a promising energy carrier for a low-carbon future energy system, as it can be stored on a megaton scale (equivalent to TWh of energy) in subsurface reservoirs. However, safe and eﬀicient underground hydrogen storage requires a thorough understanding of the geomechanics of the host rock under fluid pressure fluctuations. In this context, we summarize the current state of knowledge regarding geomechanics relevant to carbon dioxide and natural gas storage in salt caverns and depleted reservoirs. We further elaborate on how this knowledge can be applied to underground hydrogen storage. The primary focus lies on the mechanical response of rocks under cyclic hydrogen injection and production, fault reactivation, the impact of hydrogen on rock properties, and other associated risks and challenges. In addition, we discuss wellbore integrity from the perspective of underground hydrogen storage. The paper provides insights into the history of energy storage, laboratory scale experiments, and analytical and simulation studies at the field scale. We also emphasize the current knowledge gaps and the necessity to enhance our understanding of the geomechanical aspects of hydrogen storage. This involves developing predictive models coupled with laboratory scale and field-scale testing, along with benchmarking methodologies.

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Section: Chemical Reactivity Of Pore Fluid and Host Rockmentioning

confidence: 99%

Comprehensive review of geomechanics of underground hydrogen storage in depleted reservoirs and salt caverns

Ramesh Kumar,

Honorio,

Chandra

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

Impact of exposure to brine/CO₂ on the mechanical and transport properties of the Mt. Simon Sandstone

2021

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When sandstone rocks are exposed to CO 2 -saturated brine, their transport and mechanical properties can, potentially, change due to chemical reactions as a result of such exposure. This paper investigates changes in the flow-through characteristics, porosity, and the mechanical properties of Mt. Simon Sandstone samples caused by such exposure to brine/CO 2 . A core, extracted from the Mt. Simon formation, was first characterized for its porosity and relevant transport properties, and it was then aged for over 500 hr in CO 2 -saturated brine at formation-relevant pressure, temperature, and confining stress conditions. The deformation of the sample was measured in situ during aging via strain gauges attached to the core's surface. Following the aging experiment, the sample's porosity and transport properties were again analyzed. Our experiments show that both the porosity and permeability of the Mt. Simon sandstone sample increase due to exposure to brine/CO 2 , with the impact on permeability being more significant. The deformation measurements employing strain gauges indicate a weakening of the core material. Analysis of the composition of the brine at the conclusion of the testing reveals changes, specifically, an increase in the concentration of several of the cations. These changes are indicative of mineral/clay dissolution, consistent with the porosity, permeability, and strain gauge measurements.

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Comprehensive review of geomechanics of underground hydrogen storage in depleted reservoirs and salt caverns

Ramesh Kumar,

Honorio,

Chandra

et al. 2023

Journal of Energy Storage

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Mechanical Behavior of Sandstone Pressurized with Supercritical CO ₂ and Water under Different Confining Pressure Conditions

Cited by 8 publications

References 41 publications

Comprehensive review of geomechanics of underground hydrogen storage in depleted reservoirs and salt caverns

Comprehensive review of geomechanics of underground hydrogen storage in depleted reservoirs and salt caverns

Impact of exposure to brine/CO₂ on the mechanical and transport properties of the Mt. Simon Sandstone

Comprehensive review of geomechanics of underground hydrogen storage in depleted reservoirs and salt caverns

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Mechanical Behavior of Sandstone Pressurized with Supercritical CO 2 and Water under Different Confining Pressure Conditions

Cited by 8 publications

References 41 publications

Comprehensive review of geomechanics of underground hydrogen storage in depleted reservoirs and salt caverns

Comprehensive review of geomechanics of underground hydrogen storage in depleted reservoirs and salt caverns

Impact of exposure to brine/CO2 on the mechanical and transport properties of the Mt. Simon Sandstone

Comprehensive review of geomechanics of underground hydrogen storage in depleted reservoirs and salt caverns

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Product

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Mechanical Behavior of Sandstone Pressurized with Supercritical CO ₂ and Water under Different Confining Pressure Conditions

Impact of exposure to brine/CO₂ on the mechanical and transport properties of the Mt. Simon Sandstone