METHOD OF STORING HYDROGEN GAS IN A SUBSURFACE FORMATION USING NITROGEN, METHANE, AND CARBON DIOXIDE BLEND AS A CUSHION GAS
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United States of America
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Issued Date -
Dec 12, 2024
app pub date -
Jun 7, 2023
filing date -
Jun 7, 2023
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Abstract
A method of storing hydrogen (H2) gas in a subsurface formation having an injection well, a production well and a heat well. The method includes injecting a first fluid stream into the subsurface formation via the at least one injection well to form a first composition containing a gas-phase mixture, a liquid-phase mixture and a solid matrix; injecting a H2-containing gas stream into the subsurface formation via the at least one injection well to form a gas mixture containing H2 gas; and heating and pressurizing the subsurface formation containing the gas mixture via the at least one heat well thereby achieving a storage condition and maintaining the storage condition to store the H2 in the subsurface formation.
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