US 12,359,539 B2
Carbon dioxide enhanced hydrocarbon recovery methods coupled with underground hydrogen storage
Jun Gao, Dhahran (SA); Hyung T. Kwak, Dhahran (SA); Abdulaziz S. Al-Qasim, Dhahran (SA); and Ali Alyousef, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Jul. 19, 2023, as Appl. No. 18/355,304.
Prior Publication US 2025/0027386 A1, Jan. 23, 2025
Int. Cl. E21B 41/00 (2006.01); E21B 43/16 (2006.01)
CPC E21B 41/0064 (2013.01) [E21B 43/168 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method comprising:
introducing carbon dioxide into a subterranean formation via one or more injection wells, the subterranean formation containing hydrocarbons and water, wherein the water is present in the subterranean formation in a water-bearing zone below the hydrocarbon-bearing zone;
mobilizing at least a portion of the hydrocarbons in a hydrocarbon-bearing zone of the subterranean formation with the carbon dioxide;
after mobilization with the carbon dioxide, producing the hydrocarbons from the hydrocarbon-bearing zone of the subterranean formation via one or more production wells;
introducing hydrogen to the subterranean formation via the one or more injection wells, the hydrogen displacing the carbon dioxide downward in the subterranean formation and promoting production of at least a portion of the water as the carbon dioxide is displaced downward;
storing the hydrogen in the subterranean formation above the carbon dioxide; and
producing at least a portion of the hydrogen from the subterranean formation via the one or more production wells, the one or more injection wells, or any combination thereof.