Print Email Facebook Twitter Contact angle measurement for hydrogen/brine/sandstone system using captive-bubble method relevant for underground hydrogen storage Title Contact angle measurement for hydrogen/brine/sandstone system using captive-bubble method relevant for underground hydrogen storage Author Hashemi, L. (TU Delft Reservoir Engineering) Glerum, Wuis (Student TU Delft) Farajzadeh, R. (TU Delft Reservoir Engineering) Hajibeygi, H. (TU Delft Reservoir Engineering) Date 2021 Abstract Subsurface porous formations provide large capacities for underground hydrogen storage (UHS). Successful utilization of these porous reservoirs for UHS depends on accurate quantification of the hydrogen transport characteristics at continuum (macro) scale, specially in contact with other reservoir fluids. Relative-permeability and capillary-pressure curves are among the macro-scale transport characteristics which play crucial roles in quantification of the storage capacity and efficiency. For a given rock sample, these functions can be determined if pore-scale (micro-scale) surface properties, specially contact angles, are known. For hydrogen/brine/rock system, these properties are yet to a large extent unknown. In this study, we characterize the contact angles of hydrogen in contact with brine and Bentheimer and Berea sandstones at various pressure, temperature, and brine salinity using captive-bubble method. The experiments are conducted close to the in-situ conditions, which resulted in water-wet intrinsic contact angles, about 25 to 45 degrees. Moreover, no meaningful correlation was found with changing tested parameters. We monitor the bubbles over time and report the average contact angles with their minimum and maximum variations. Given rock pore structures, using the contact angles reported in this study, one can define relative-permeability and capillary-pressure functions for reservoir-scale simulations and storage optimization. Subject Contact angleHydrogen/brine/sandstoneUnderground hydrogen storageWettability To reference this document use: http://resolver.tudelft.nl/uuid:ac87f063-b424-48a0-bb54-fbf04bae50b5 DOI https://doi.org/10.1016/j.advwatres.2021.103964 ISSN 0309-1708 Source Advances in Water Resources, 154 Part of collection Institutional Repository Document type journal article Rights © 2021 L. Hashemi, Wuis Glerum, R. Farajzadeh, H. Hajibeygi Files PDF 1_s2.0_S0309170821001196_main.pdf 2.41 MB Close viewer /islandora/object/uuid:ac87f063-b424-48a0-bb54-fbf04bae50b5/datastream/OBJ/view