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US 12,716,336 B2Granted
Systems and methods for generation of hydrogen by in-situ (subsurface) serpentinization and carbonization of mafic or ultramafic rock
AssigneeOhio State Innovation Foundation
InventorsThomas Darrah, Vikram Rao, Colin Whyte
Life of this patent
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Abstract
Apparatuses, systems, and methods are disclosed for producing and liberating hydrogen gas and sequestering carbon dioxide through sequential serpentinization and carbonation (mineralization) reactions conducted in situ via one or more wellbores that at least partially traverse subterranean geological formations having large concentrations of mafic igneous rock, ultramafic igneous rock, or a combination thereof.
Claims13
A method of producing hydrogen gas from a geological formation comprising mafic igneous rock, ultramafic igneous rock, or a combination thereof, the method comprising:
- providing a wellbore that at least partially traverses the geological formation, the wellbore providing a pathway for injection of fluids into the geological formation and recovery of fluids therefrom, wherein the geological formation includes iron-rich rock;
- injecting a water-based stimulant through the pathway provided by the wellbore and into contact with reactive surfaces of the geological formation to generate a hydrogen gas via serpentinization;
- and
- recovering a fluid composition comprising the hydrogen gas from the wellbore via the pathway.
1 more element
Dependencies are inferred from the claim text.