Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 49, Issue 12, Pages -Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2022GL099433
Keywords
geological hydrogen storage; hydrogen flow; porous media; hydrogen recovery; hydrogen storage; reservoir pressure
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Funding
- Engineering and Physical Sciences Research Council (EPSRC) [EP/S027815/1]
- Clean Hydrogen Partnership [101006632]
- European Union
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This study provides a comprehensive experimental investigation of the flow behavior of H-2-Brine in different types of sandstones and a carbonate rock. The effect of pressure, brine salinity, and rock type on hydrogen flow behavior is examined and compared with that of CH4 and N-2. The results suggest that nitrogen can be used as a proxy gas for hydrogen in multiphase flow experiments.
Geological hydrogen storage in depleted gas fields represents a new technology to mitigate climate change. It comes with several research gaps, around hydrogen recovery, including the flow behavior of hydrogen gas in porous media. Here, we provide the first-published comprehensive experimental study of unsteady state drainage relative permeability curves with H-2-Brine, on two different types of sandstones and a carbonate rock. We investigate the effect of pressure, brine salinity, and rock type on hydrogen flow behavior and compare it to that of CH4 and N-2 at high-pressure and high-temperature conditions representative of potential geological storage sites. Finally, we use a history matching method for modeling relative permeability curves using the measured data within the experiments. Our results suggest that nitrogen can be used as a proxy gas for hydrogen to carry out multiphase fluid flow experiments, to provide the fundamental constitutive relationships necessary for large-scale simulations of geological hydrogen storage.
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