One of the major challenges pertaining to a full hydrogen economy is hydrogen storage in the Earth's subsurface formations, such as deep saline aquifers and depleted oil and gas reservoirs. Generally, sedimentary basins are considered for this purpose due to their potential for large-scale storage. However, basaltic formations are also in comparable proportions having voluminous volcanic rocks, vast expansions, and high thickness. We, thus, in this work, evaluate brine/hydrogen/rock wettability of the real Basalt rock samples from CarbFix site in Iceland. Wettability is one of the significant parameters that highly influences the spreading and migration of the gas (as seen for CO₂ capillary trapping investigations), interfacial area, mass transfer, and mineralization. We carried out brine/gas/Basalt three-phase contact angle measurements for some gases (CO₂, N₂, and He) under storage conditions of high temperature (323 K) and pressures (5, 10, 15, and 20 MPa). The analogy drawn from developed correlation for H₂ from the contact angle trend of He (density close to H₂ density) and empirical correlations reveals that a strong water-wetting state of Basalt can be expected for H₂. The high water-wetting state of Basalt in the presence of H₂ at storage conditions may be suitable for capillary trapping of H₂ for long term storage in Basaltic formation.

与充分氢经济有关的主要挑战之一是地球地下地层中的氢存储，例如深层盐水层和枯竭的油气藏。通常，考虑到沉积盆地由于其潜在的大规模存储潜力。但是，玄武岩地层也具有相当的比例，具有大量的火山岩，巨大的膨胀和较高的厚度。因此，在这项工作中，我们评估了来自冰岛CarbFix站点的实际玄武岩岩石样品的盐水/氢气/岩石润湿性。润湿性是影响气体扩散和迁移的重要参数之一（对于CO ₂毛细管捕集研究），界面面积，传质和矿化作用。我们在高温（323 K）和压力（5、10、15和20 MPa）的存储条件下对某些气体（CO ₂，N ₂和He）进行了盐水/气体/玄武岩三相接触角测量。从发达相关绘制H中的比喻₂从他（密度接近H的接触角趋势₂密度）和经验关系表明，玄武岩的强润湿水的状态可以预期用于h ₂。在储存条件下在H ₂存在下玄武岩的高水润湿状态可能适用于H _2的毛细管捕集 可以长期储存在玄武岩层中。