Time-resolved 2D and 3D Imaging of Hydrogen and Brine Displacement Processes in Clashach Sandstone

This dataset contains: 1) Time-resolved (4D) tomographic images of steady state H2 and brine injections into untreated Clashach sandstone at 5 MPa pore fluid pressure, ambient temperature and a total flow rate of 20 µl min-1. Time-resolved imaging of the H2 and brine displacement processes was achieved by means of a 65 keV monochromatic beam with a bandwidth of 2×10-3 and the beamline’s scintillator-coupled PCO edge 5.5 imaging camera (‘Module 2’ with a 7.91 x 7.91 μm/pixel size and a field of view of 20 mm x 12 mm). A total of 900 projections with 20 milliseconds exposure time were recorded for each time-resolved µCT scan. Porvided are reconstructions of the whole rock volume and H2- segmented subvolumes. 2) 2D-radiography of unsteady state hydrogen injection into a brine-saturated Clashach sandstone at 5 MPa pore fluid pressure and ambient temperatureand and a flow rate of 5 µl min-1. 2D-radiography used an exposure time of 25-milliseconds per frame and 900 frames per acquisition, with consecutive acquisitions running for 78 minutes. Provided are enhanced 2D images and a slow motion video, made from the same files.

Thaysen, Eike Marie; Butler, Ian B; Freitas, Damien; Hassanpouryouzband, Aliakbar; Alvarez-Borges, Fernando; Atwood, Robert; Rizzo, Roberto; Edlmann, Katriona. (2025). Time-resolved 2D and 3D Imaging of Hydrogen and Brine Displacement Processes in Clashach Sandstone, [Image]. University of Edinburgh. School of GeoSciences. https://doi.org/10.7488/ds/7913.