US 12,338,802 B2
System and method for generation and extraction of fossil fuel and hydrogen from a geologic formation with increased energy efficiency
Travis S. Ramsay, Abu Dhabi (AE); and Rahul M. Fonseca, Abu Dhabi (AE)
Assigned to Abu Dhabi National Oil Company, Abu Dhabi (AE)
Filed by Abu Dhabi National Oil Company, Abu Dhabi (AE)
Filed on Jan. 22, 2024, as Appl. No. 18/419,498.
Claims priority of provisional application 63/492,916, filed on Mar. 29, 2023.
Prior Publication US 2024/0328398 A1, Oct. 3, 2024
Int. Cl. F03G 4/00 (2006.01); F03G 4/02 (2006.01); F24T 10/10 (2018.01); F24T 10/20 (2018.01); F24T 50/00 (2018.01)
CPC F03G 4/00 (2021.08) [F03G 4/02 (2021.08); F03G 4/026 (2021.08); F03G 4/029 (2021.08); F24T 10/10 (2018.05); F24T 10/20 (2018.05); F24T 50/00 (2018.05)] 20 Claims
OG exemplary drawing
 
1. A method for extracting fuel from a geologic formation comprising:
heating a target volume in the geologic formation to generate the fuel via thermal conversion of a precursor material thereby also heating a part of the geologic formation;
extracting the generated fuel from the geologic formation, wherein the fuel comprises hydrogen gas;
recovering heat from the geologic formation;
cooling the extracted fuel below a temperature of 20 degrees Kelvin via a cryogenic cooler to generate liquid hydrogen; and
storing the generated liquid hydrogen via a cryogenic storage tank;
using the recovered heat for one or more of: heating the target volume, heating a different target volume, extracting the fuel, recovering the heat from the geologic formation, processing the extracted fuel, and converting the recovered heat into another form of storable energy.