Construction modeling and parameter optimization of multi-step horizontal energy storage salt caverns

Li, Jinlong; Shi, Xilin; Zhang, Shuai

doi:10.1016/j.energy.2020.117840

Cited by 36 publications

(8 citation statements)

References 30 publications

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“…generation of artificial caverns by a technique commonly referred to as ‘solution‐mining’; e.g. Crotogino et al., 2018; Field et al., 2019; Jiang et al., 2021; Li et al., 2020; Liu et al., 2015). The current need for an increasing use of renewable energy and developing decarbonization solutions requires specific plans for large‐scale energy storage solutions (HydrogenTCP‐Task42, 2023).…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of geophysical and transport properties of salt rocks in the context of underground energy storage

Falcon‐Suarez,

Dale,

Marin‐Moreno

2024

Geophysical Prospecting

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Artificial caverns in salt rock formations play an important role in the net‐zero energy transition challenge, both for covering short‐term fluctuations in energy demand and serving as safe locations for long‐term underground gas storage both for hydrogen and natural gas. Geophysical tools can serve for monitoring geomechanical changes in the salt cavern during selection and development, and during gas storage/extraction activities, but the use of common geophysical monitoring techniques has been very limited in this area. Here, we present experimental work on physical and transport properties of halite rocks within the energy storage context and assess the potential of seismic and electromagnetic data to monitor gas storage activities in salt formations. First, we analysed the stress‐dependency of the elastic and transport properties of five halite rocks to improve our understanding on changes in the geological system during gas storage operations. Second, we conducted two dissolution tests, using cracked and intact halite samples, monitored with seismic (ultrasonic P‐ and S‐waves velocities and their attenuation factors) and electromagnetic (electrical resistivity) sources to evaluate (i) the use of these common geophysical sensing methods to remotely interpret caverning development and (ii) the effect of structural discontinuities on rock salt dissolution. Elastic properties and permeability showed an increasing trend towards rock sealing and mechanical enhancement with increasing pressure for permeabilities above 10−21 m2, with strong linear correlations up to 20 MPa. In the dissolution tests, the ultrasonic waves and electrical resistivity showed that the presence of small structural discontinuities largely impacts the dissolution patterns. Our results indicate that seismic and electromagnetic methods might help in the selection and monitoring of the caverning process and gas storage operations, contributing to the expected increase in demand of large‐scale underground hydrogen storage.

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Section: Introductionmentioning

confidence: 99%

“…Gehrmann et al., 2021). The expansion of UHS activities will require the development of specific numerical predictive tools (Li et al., 2020; Yu et al., 2020), which are commonly informed by experimental observations (e.g. Jiang et al., 2021; Zheng et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

Experimental study of geophysical and transport properties of salt rocks in the context of underground energy storage

Falcon‐Suarez,

Dale,

Marin‐Moreno

2024

Geophysical Prospecting

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“…Among the power storage technologies, compressed air energy storage can meet the requirements of high e ciency, large capacity, and long service life at the grid level, so it is valued by countries around the world [7][8][9][10]. Salt caverns are considered as ideal sites for compressed air energy storage because of their high quality geological conditions such as wide distribution, their variety, and large-scale availability, and excellent physical and mechanical properties such as small permeability, low porosity, and compact structure [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Creep Fracture Characteristics and the Constitutive Model of Salt Rock under a Coupled Thermo-Mechanical Environment

Wang

Liang

Guangwu

et al. 2022

Mathematical Problems in Engineering

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The fracture extension characteristics of salt rocks under creep play an important role in the long-term safety and stability assessment of underground compressed air storage reservoirs. To study the fracture evolution characteristics of salt rock with time, the present study modified the Charles creep fracture intrinsic model and calibrated the A and n of the fracture extension coefficient parameters by creep fracture experiments with a constant stress rate loading method for salt rock under different temperature conditions. Finally, the modified Charles model was embedded into PFC (particle flow code) to simulate the fracture of salt rock numerically and the results were verified theoretically. The results show that (1) the fracture extension rate is related to the parameters A and n in addition to the stress intensity factor; (2) both n and A gradually decrease with the increase of temperature, and an decrease of n and A represents the decrease of fracture creep extension rate; and (3) the longer the initial fracture length of the specimen, the smaller the fracture time. The results of this study can provide theoretical guidance for evaluating the confinement of underground compressed air storage reservoirs.

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“…Hence, based on these sonar survey data, they combined it with a simulation experiment to reconstruct the three-dimensional shape of the horizontal cavern (Figure 4). Using theoretical methods and empirical assumptions, Li Jinlong et al [15,16] established a mathematical model for the TWH cavern with moving boundaries, and simulated the construction process of HA-4 / HA-5 horizontal caverns using the proposed model. The results show that the shape of the entire cavern is U-shaped, rather than a dumbbell or horizontal ellipsoid, as in the case of salt domes (Figure 5).…”

Section: Introductionmentioning

confidence: 99%

Stability analysis of a typical two-well-horizontal saddle-shaped salt cavern

Yuan

Wan

et al. 2021

Journal of Energy Storage

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Construction modeling and parameter optimization of multi-step horizontal energy storage salt caverns

Cited by 36 publications

References 30 publications

Experimental study of geophysical and transport properties of salt rocks in the context of underground energy storage

Experimental study of geophysical and transport properties of salt rocks in the context of underground energy storage

Creep Fracture Characteristics and the Constitutive Model of Salt Rock under a Coupled Thermo-Mechanical Environment

Stability analysis of a typical two-well-horizontal saddle-shaped salt cavern

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