Hydrogen wettability of quartz substrates exposed to organic acids; Implications for hydrogen geo-storage in sandstone reservoirs

Ali, Muhammad; Jha, Nilesh Kumar; Al-Yaseri, Ahmed; Zhang, Yihuai; Iglauer, Stefan; Sarmadivaleh, Mohammad

doi:10.1016/j.petrol.2021.109081

Cited by 105 publications

(44 citation statements)

References 66 publications

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“… 14 , 15 Therefore, the behavior of injected hydrogen should be investigated in terms of mobility and multiphase properties to ensure recovery efficiencies are maintained. 16 , 18 (ii) Hydrogen acts as an electron donor for a variety of microbial processes. The occurrence and behavior of hydrogenotrophic microbes must be investigated to determine the impact of potential hydrogen consumption losses and compositional changes of the stored hydrogen.…”

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confidence: 99%

Geological Hydrogen Storage: Geochemical Reactivity of Hydrogen with Sandstone Reservoirs

et al. 2022

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The geological storage of hydrogen is necessary to enable the successful transition to a hydrogen economy and achieve net-zero emissions targets. Comprehensive investigations must be undertaken for each storage site to ensure their long-term suitability and functionality. As such, the systematic infrastructure and potential risks of large-scale hydrogen storage must be established. Herein, we conducted over 250 batch reaction experiments with different types of reservoir sandstones under conditions representative of the subsurface, reflecting expected time scales for geological hydrogen storage, to investigate potential reactions involving hydrogen. Each hydrogen experiment was paired with a hydrogen-free control under otherwise identical conditions to ensure that any observed reactions were due to the presence of hydrogen. The results conclusively reveal that there is no risk of hydrogen loss or reservoir integrity degradation due to abiotic geochemical reactions in sandstone reservoirs.

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confidence: 99%

Geological Hydrogen Storage: Geochemical Reactivity of Hydrogen with Sandstone Reservoirs

et al. 2022

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“…43 These sand-packs replicate sandstone reservoirs that are abundant in number and which may serve as potential hydrogen geo-storage media soon. 44 The bulk volume of the sand-pack was 695 mL, and the pore volume (PV) of the sand-packs obtained ranged from 172 to 188 mL. Thus, the sand-packs exhibited a porosity between 24.7 and 27% and a permeability of 484−543 md over various flooding investigations, ensuring that near-similar values were reproducible.…”

Section: Resultsmentioning

confidence: 82%

Air Foams for Mobility Control and Subsurface Storage of Hydrogen in Porous Media: An Experimental Study

et al. 2022

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This study initially explores and reports the feasibility of surfactant foams to increase the efficacy of hydrogen storage in porous media. This is an essential field of study, which aims to tackle a primary concern of the future hydrogen-based economy-hydrogen storage, which is essential for the supply of energy during periods of intermittent supply. For this, storage of hydrogen in porous media is explored wherein non-uniform front advance and superior gas mobility reduce storage efficacy. To mitigate this concern, the foam was prepared using compressed air and a non-ionic surfactant, Triton X-100, in a guar gum solution of 4000 ppm. A fabricated sand-pack, prepared from the sand of size 100−180 μm, was used as porous media, in which hydrogen storage was evaluated for a fixed flow rate of 30 mL/h as a function of varying slug sizes. The inclusion of foam as mobility control fluid massively increased hydrogen storage by a factor of 1.5−2.7, with slug size 0.5 PV being the most desirable. Enhanced hydrogen storage was obtained when a slug of 0.3 PV or greater was used. Altering the gas flow rate from 30 to 60 mL/h reduced hydrogen storage by 34%. The presence of crude oil reduces foam stability, and the injection and storage of hydrogen gas in depleted oilfields having high volume of crude oil is thus not recommended. This study promotes the use of surfactant foams for subsurface storage of hydrogen in sandstone media by controlling the mobility of injected gas.

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“…This trend is consistent with that observed in previous research, where the aging of rock surfaces in n-decane/stearic acid solution resulted in the attainment of intermediate water-wet and CO 2 -wet conditions. 20,33,34,77 By contrast, when the quartz and Fontainebleau quartz surfaces are aged in acetone/stearic acid solution and methanol/stearic acid solution, the substrate surfaces are only altered into weakly water-wet conditions at the highest experimental temperature and pressure used herein (323 K and 20 MPa). Under those conditions, the presence of stearic acid/ acetone shifts the advancing and receding contact angles of the non-porous quartz from θ a = 67°and θ r = 61°to θ a = 80°and θ r = 76°(Figure 4d).…”

Section: Effects Of Thementioning

confidence: 93%

“…Similar results have been obtained for the wettability of quartz in CO 2 /brine systems 33 and H 2 /brine environments. 20,49 Generally, the density of CO 2 gas molecules increases with increasing pressure and, hence, the intermolecular interactions between the quartz/Fontainebleau quartz surfaces and the CO 2 gas molecules significantly increase at higher pressure, thereby creating hydrophobic surfaces. 28,37,82 Moreover, although the decrease in gas density with increasing temperature has been found to result in lower contact angles and low CO 2 -wettability of mica, calcite, and shale, 28,36,82,83 the behavior of quartz is quite different.…”

Section: Effects Of Thementioning

confidence: 99%

Effects of Various Solvents on Adsorption of Organics for Porous and Nonporous Quartz/CO₂/Brine Systems: Implications for CO₂ Geo-Storage

et al. 2022

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The underground geo-storage of carbon dioxide (CO 2 ) is an essential component of the carbon capture and sequestration value chain. The success of CO 2 containment depends on the wetting state of the rock, which controls the mechanism of fluid flow and distribution. The presence of organic acids in the storage formation introduces a considerable effect on the wettability of the rock/CO 2 /brine system under various temperature and pressure conditions. Despite the previous studies on this topic, the impact of the substrate pores, the rock surface roughness, and the solvents used to prepare the organic acid solution under various temperatures and pressures has not yet been elucidated. In the present study, the contact angles of non-porous quartz and porous Fontainebleau quartz are measured in CO 2 /brine systems at various pressures of 0.1−20 MPa and temperatures of 298 and 323 K. In addition, various solvents are used to prepare the stearic acid solution in order to assess their influence on the adsorption of organics for porous and non-porous quartz/CO 2 /brine systems. The results clearly indicate that n-decane is the most effective solvent for solubilizing the stearic acid to attain full wettability of the substrate by CO 2 due to its polar compatibility with the stearic acid. Generally, the porous aged Fontainebleau quartz exhibits higher contact angles than the aged non-porous quartz at higher pressures, and the unaged Fontainebleau surfaces demonstrate water wettability, with a wide range of advancing and receding contact angles of less than 90°. However, when the pressure is increased to 15 and 20 MPa in the CO 2 /brine system, the contact angles of the Fontainebleau quartz are higher than those of pure quartz. These results suggest that the surface roughness of the rock merely amplifies the inherent surface chemistry and original wettability of the rock if surface conditions are hydrophobic.

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Hydrogen wettability of quartz substrates exposed to organic acids; Implications for hydrogen geo-storage in sandstone reservoirs

Cited by 105 publications

References 66 publications

Geological Hydrogen Storage: Geochemical Reactivity of Hydrogen with Sandstone Reservoirs

Geological Hydrogen Storage: Geochemical Reactivity of Hydrogen with Sandstone Reservoirs

Air Foams for Mobility Control and Subsurface Storage of Hydrogen in Porous Media: An Experimental Study

Effects of Various Solvents on Adsorption of Organics for Porous and Nonporous Quartz/CO₂/Brine Systems: Implications for CO₂ Geo-Storage

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Hydrogen wettability of quartz substrates exposed to organic acids; Implications for hydrogen geo-storage in sandstone reservoirs

Cited by 105 publications

References 66 publications

Geological Hydrogen Storage: Geochemical Reactivity of Hydrogen with Sandstone Reservoirs

Geological Hydrogen Storage: Geochemical Reactivity of Hydrogen with Sandstone Reservoirs

Air Foams for Mobility Control and Subsurface Storage of Hydrogen in Porous Media: An Experimental Study

Effects of Various Solvents on Adsorption of Organics for Porous and Nonporous Quartz/CO2/Brine Systems: Implications for CO2 Geo-Storage

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Effects of Various Solvents on Adsorption of Organics for Porous and Nonporous Quartz/CO₂/Brine Systems: Implications for CO₂ Geo-Storage