US 12,252,970 B2
Extraction and integration of waste heat from enhanced geologic hydrogen production
Peter L. Johnson, Dublin, OH (US); and Thomas Darrah, Dublin, OH (US)
Assigned to KOLOMA, INC., Denver, CO (US)
Filed by Koloma, Inc., Dublin, OH (US)
Filed on Jun. 7, 2023, as Appl. No. 18/206,966.
Claims priority of provisional application 63/349,897, filed on Jun. 7, 2022.
Claims priority of provisional application 63/349,883, filed on Jun. 7, 2022.
Claims priority of provisional application 63/349,901, filed on Jun. 7, 2022.
Prior Publication US 2023/0392485 A1, Dec. 7, 2023
Int. Cl. C01B 3/02 (2006.01); C01B 3/06 (2006.01); E21B 36/00 (2006.01); E21B 43/16 (2006.01); E21B 43/24 (2006.01); E21B 43/27 (2006.01)
CPC E21B 43/2405 (2013.01) [C01B 3/06 (2013.01); E21B 36/001 (2013.01); E21B 36/008 (2013.01); E21B 43/164 (2013.01); E21B 43/27 (2020.05); C01B 2203/84 (2013.01); C01B 2203/86 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of producing hydrogen from a subsurface rock formation, the method comprising:
heating a fluid including dihydrogen sulfide within a subsurface rock formation to stimulate an exothermic reaction of the fluid with components of the subsurface rock formation and produce a hydrogen reaction product, wherein the exothermic reaction comprises a pyritization reaction, and wherein the subsurface rock formation comprises an iron-rich rock;
extracting the hydrogen produced from the reaction of the fluid with the subsurface rock formation; and
utilizing at least one of heat produced from the exothermic reaction or the hydrogen product to generate mechanical energy, thermal energy, electrical energy, or chemical reactions.