Ostwald ripening leads to less hysteresis during hydrogen injection and withdrawal: A pore-scale imaging study

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 114, P. 475 - 485

Published: March 1, 2025

Language: Английский

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Effect of Methyl Orange on the Hydrogen Wettability of Sandstone Formation for Enhancing the Potential of Underground Hydrogen Storage

Energy & Fuels, Journal Year: 2023, Volume and Issue: 37(8), P. 6149 - 6157

Published: April 11, 2023

Hydrogen is expected to play a significant role as clean energy carrier. However, the development of hydrogen economy requires use large amounts hydrogen; therefore, large-scale storage considerable problem that needs be resolved. can stored underground in aquifers, salt caverns, depleted oil and gas reservoirs, coal seams. In this context, wettability critical parameter determining containment security, capacity, fluid dynamics, withdrawal rate during geo-storage operations. Meanwhile, toxic soluble dye, methyl orange (MO), widely used textile other industries released quantities into surface subsurface waters. Hence, present study, MO alter reservoirs favor investigated. To end, model oil-wet rock surfaces are prepared by aging quartz substrates with stearic acid then treating them various aqueous for 1 week at 50 °C. The brine contact angles on these measured environment under reservoir conditions demonstrate treatment makes more hydrophilic. Moreover, angle seen increase significantly temperature, pressure, salinity. addition, importance pH assessed, brines (NaCl, KCl, MgCl2, CaCl2) compared. proposed improve trapping efficiency sandstone while simultaneously providing safe disposal route via deep well injection.

Language: Английский

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Comparative analysis of hydrogen, methane and nitrogen relative permeability: Implications for Underground Hydrogen Storage

Journal of Energy Storage, Journal Year: 2023, Volume and Issue: 73, P. 108827 - 108827

Published: Oct. 7, 2023

Language: Английский

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Pore-scale Ostwald ripening of gas bubbles in the presence of oil and water in porous media

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 647, P. 331 - 343

Published: May 25, 2023

Ostwald ripening of gas bubbles is a spontaneous mass transfer process that can impact the storage volume trapped in subsurface. In homogeneous porous media with identical pores, evolve toward an equilibrium state equal pressure and volume. How presence two liquids impacts bubble population less known. We hypothesize sizes depend on surrounding liquid configuration oil/water capillary pressure.We investigate nitrogen containing decane water using level set method alternately simulates capillary-controlled displacement between to eradicate chemical-potential differences. explore initial fluid distribution evolution.Ripening three-phase scenarios stabilizes their liquids. Bubbles oil decrease size while increase increasing pressure. reach local before system globally. A potential implication for field-scale fractions vary depth transition zone.

Language: Английский

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Direct pore-scale simulation of the effect of capillary number and gas compressibility on cyclic underground hydrogen storage & production in heterogeneous aquifers

Advances in Water Resources, Journal Year: 2023, Volume and Issue: 181, P. 104547 - 104547

Published: Oct. 1, 2023

Language: Английский

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