Publication Name: PESA Gazette
Authors: Hamid Esfandyari, Alireza Safari, Ali Hashemi, Aliakbar Hassanpouryouzband, Manouchehr Haghighi, Alireza Keshavarz, Abbas Zeinijahrom
Publication Issue: January 2025
Date Published: January 2025
Number of Pages: 2
https://doi.org/10.36404/MEXS0059
Abstract:
Hydrogen (H2) offers a promising solution for the energy transition but storing it on a large scale at the surface poses significant technical and environmental challenges. Underground formations provide a practical alternative for large-scale H2 storage, yet understanding H2 behavior under various subsurface conditions is crucial for optimizing storage capacity and efficiency, which are influenced by rock properties such as wettability. This study addresses the gap in literature regarding the wettability of different minerals when CO2 was injected with H2 as a cushion gas. We examined the wettability of various mineral rocks in realistic subsurface circumstances. A series of wettability measurements were carried out using a captive drop instrument under high-pressure and high-temperature conditions, employing seven different minerals.