Methods of generating hydrogen in high-temperature, tight subterranean formations
AssigneeHalliburton Energy Services, Inc.
InventorsRonald Bosch, Philip D. Nguyen, Ronald Glen Dusterhoft
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Abstract
A method of producing hydrogen downhole in a subterranean reaction zone that employs fracturing a subterranean formation to provide fractures in the subterranean formation (e.g., to produce the subterranean reaction zone comprising fracture volume provided by the fractures), wherein the subterranean comprises a tight formation, and introducing one of more reactants downhole into the fractures (e.g., into the subterranean reaction zone), whereby hydrogen is produced by reaction of the one or more reactants in situ in the fractures (e.g., in situ in the reaction zone).
Claims20
A method comprising:
- fracturing a subterranean formation to provide fractures in the subterranean formation, wherein the subterranean comprises a tight formation, wherein the tight formation has a permeability of less than or equal to about 10 microDarcy (μD), a porosity of less than or equal to about 6%, or a combination thereof, and
- introducing one or more reactants selected from methane, carbon dioxide, oxygen, carbon monoxide, aluminum particulates, H2O, or a combination thereof downhole into the fractures, whereby hydrogen is produced by reaction of the one or more reactants in situ in the fractures with each other and/or with one or more additional reactants present within the formation and selected from hydrocarbons and H2O, and wherein downhole heating of the reactants consists of heat transfer from the tight formation to the one or more reactants in the plurality of fractures.
Dependencies are inferred from the claim text.