Optimizing underground hydrogen storage in aquifers: The impact of cushion gas type

International Journal of Hydrogen Energy, Journal Year: 2023, Volume and Issue: 52, P. 1537 - 1549

Published: Sept. 13, 2023

This study investigated the impact of cushion gas type and presence on performance underground hydrogen storage (UHS) in an offshore North Sea aquifer. Using numerical simulation, relationship between UHS was comprehensively evaluated, providing valuable insights for designing efficient project delivery. Results indicated that can significantly process's recovery efficiency purity. CO2 found to have highest capacity, while lighter gases like N2 CH4 exhibited better efficiency. Utilising as a lead higher 80%. It also determined utilising either these always more beneficial than alone, leading incremental up 7%. Additionally, purity degraded each cycle progressed, but improved over time. contributes understanding factors affecting inform selection optimal operational strategies.

Language: Английский

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A review of underground hydrogen storage systems: Current status, modeling approaches, challenges, and future prospective

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 80, P. 449 - 474

Published: July 17, 2024

Language: Английский

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Integration of underground green hydrogen storage in hybrid energy generation

Fuel, Journal Year: 2024, Volume and Issue: 371, P. 131899 - 131899

Published: May 24, 2024

One of the major challenges in harnessing energy from renewable sources like wind and solar is their intermittent nature. Energy production these can vary based on weather conditions time day, making it essential to store surplus for later use when there a shortfall. storage systems play crucial role addressing this intermittency issue ensuring stable reliable supply. Green hydrogen, sourced renewables, emerges as promising solution meet rising demand sustainable energy, depletion fossil fuels environmental crises. In present study, underground hydrogen various geological formations (aquifers, depleted hydrocarbon reservoirs, salt caverns) examined, emphasizing need detailed analysis potential hazards. The paper discusses associated with storage, including requirement extensive studies understand interactions microorganisms. It underscores importance issue, focus reviewing past projects sites, well modeling field. also emphasizes incorporating hybrid into overcome limitations standalone systems. further explores future integrations green within dynamic landscape.

Language: Английский

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Current status of underground hydrogen storage: Perspective from storage loss, infrastructure, economic aspects, and hydrogen economy targets

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 97, P. 112773 - 112773

Published: July 11, 2024

Language: Английский

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Exploring hydrogen geologic storage in China for future energy: Opportunities and challenges

Renewable and Sustainable Energy Reviews, Journal Year: 2024, Volume and Issue: 196, P. 114366 - 114366

Published: March 15, 2024

Language: Английский

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Geochemical modelling on the role of redox reactions during hydrogen underground storage in porous media

International Journal of Hydrogen Energy, Journal Year: 2023, Volume and Issue: 50, P. 19 - 35

Published: July 12, 2023

Underground Hydrogen Storage (UHS) in porous media appears to be a promising means for large-scale hydrogen storage, underpinning the full-scale of supply chain development. Hydrogen-brine-rock interactions play an important role conversion and contamination during cycling process. While redox reaction triggered by injected H2 pre-existing O2 is unique UHS compared other types gas subsurface few research have been done understand reactions solubility, pH, fewer works looked beyond its process on contamination, which may affect stored purity storage efficiency. In this context, we examined hydrogen-brine-minerals (e.g., calcite, siderite, quartz pyrite) as function dissolved oxygen concentration (from 5.5 5500 ppm), temperature, pressure through geochemical modelling using solver PHREEQC. Our results showed that increasing from ppm resulted negligible impact solubility pH all tested minerals. As sensitive minerals, siderite calcite can react with process, leading up certain loss at 20 MPa, respectively. Meanwhile, pyrite are insensitive minerals hydrogen, causing less than 0.2% same condition. indicate mineral oxidation due formation brine played H2-brine-rock interactions. The also carbonate such act electron acceptors, dissociation thus formed strong reduction environment based PHREEQC database. This likely causes measurable associated abiotic lifetime underground operation. Taken together, suggest clean standstone reservoirs will signifcantly reduce perspective.

Language: Английский

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Modelling underground hydrogen storage: A state-of-the-art review of fundamental approaches and findings

Gas Science and Engineering, Journal Year: 2023, Volume and Issue: 121, P. 205196 - 205196

Published: Dec. 16, 2023

This review presents a State-of-Art of geochemical, geomechanical, and hydrodynamic modelling studies in the Underground Hydrogen Storage (UHS) domain. Geochemical assessed reactivity hydrogen respective fluctuations losses using kinetic reaction rates, rock mineralogy, brine salinity, integration redox reactions. Existing geomechanics offer an array coupled hydro-mechanical models, suggesting decline failure during withdrawal phase aquifers compared to injection phase. Hydrodynamic evaluations indicate critical importance relative permeability hysteresis determining UHS performance. Solubility diffusion gas appear have minimal impact on UHS. Injection production cushion deployment, reservoir heterogeneity however significantly affect performance, stressing need for thorough experimental studies. However, most current efforts focuses assessing aspects which are crucial understanding viability safety In contrast, lesser-explored geochemical geomechanical considerations point potential research gaps. Variety software tools such as CMG, Eclipse, COMSOL, PHREEQC evaluated those underlying effects, along with few recent application data-driven based Machine Learning (ML) techniques enhanced accuracy. identified several unresolved challenges modelling: pronounced lack expansive datasets, leading gap between model predictions their practical reliability; robust methodologies capable capturing natural subsurface while upscaling from precise laboratory data field-scale conditions; demanding intensive computational resources novel strategies enhance simulation efficiency; addressing geological uncertainties environments, that oil simulations could be adapted comprehensive offers synthesis prevailing approaches, challenges, gaps domain UHS, thus providing valuable reference document further efforts, facilitating informed advancements this towards realization sustainable energy solutions.

Language: Английский

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Mechanistic evaluation of the reservoir engineering performance for the underground hydrogen storage in a deep North Sea aquifer

International Journal of Hydrogen Energy, Journal Year: 2023, Volume and Issue: 50, P. 558 - 574

Published: Aug. 11, 2023

Underground hydrogen storage (UHS) in aquifers, salt caverns and depleted hydrocarbon reservoirs allows for the of larger volumes H2 compared to surface vessels. In this work, we investigate impact aquifer-related mechanisms parameters on performance UHS an associated North Sea aquifer using 3D numerical compositional simulations. Simulation results revealed that aquifer's permeability heterogeneity has a significant recovery efficiency where more homogenous rock would lead improved productivity. The inclusion relative hysteresis resulted drop injectivity due discontinuity inside which leads residual during withdrawal periods. contrast, effects solubility diffusion were negligible when studied each isolation from other factors. Hence, it is essential properly account evaluating aquifers.

Language: Английский

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Optimizing the operational efficiency of the underground hydrogen storage scheme in a deep North Sea aquifer through compositional simulations

Journal of Energy Storage, Journal Year: 2023, Volume and Issue: 73, P. 108832 - 108832

Published: Aug. 31, 2023

In this study, we evaluate the technical viability of storing hydrogen in a deep UKCS aquifer formation through series numerical simulations utilising compositional simulator CMG-GEM. Effects various operational parameters such as injection and production rates, number length storage cycles, shut-in periods on performance underground (UHS) process are investigated study. Results indicate that higher H2 rates degrade both aquifer's working capacity recovery during withdrawal phase. This can be attributed to dominant viscous forces at which lead fingering gas gravity override native water resulting an unstable displacement by gas. Furthermore, analysis simulation results shows longer less frequent cycles decreased retrieval. We conclude UHS studied is technically feasible, however, thorough evaluation necessary optimise efficiency.

Language: Английский

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An overview of underground hydrogen storage with prospects and challenges for the Australian context

Geoenergy Science and Engineering, Journal Year: 2023, Volume and Issue: 231, P. 212354 - 212354

Published: Sept. 23, 2023

Language: Английский

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