The role of microscopic displacement dynamics for underground hydrogen versus natural gas storage in fractured reservoirs

This dataset contains X-ray CT images from Experiment 2 of the study titled "Drainage, Imbibition, and Trapping Behavior of Hydrogen versus Methane in Fractured Limestone from a Natural Gas Storage Aquifer in Belgium." Experiment 2 was conducted on a fractured reservoir rock sample with a diameter of 25 mm, a fracture width of 255 µm, and a length of 45 mm. Due to the limited field of view of the scanner, the sample was scanned in two parts—top and bottom—for the dry scan. Fluids (gas or brine) were injected from the bottom of the vertically mounted sample, and multiphase flow scans were performed exclusively on the bottom part (near the injection point). The dataset includes experiments for drainage and imbibition using hydrogen, methane, and a 95:5 hydrogen-methane mixture (based on partial pressure).

本数据集包含来自题为《比利时天然气储层含水层裂缝性石灰岩中氢气与甲烷的排驱、自吸及捕集行为》的研究中实验2的X射线计算机断层扫描（X-ray CT）图像。实验2以直径25 mm、裂缝宽度255 µm、长度45 mm的裂缝性储层岩心样品为研究对象。受限于扫描仪的视场范围，干扫阶段需将样品分为上下两部分分别完成扫描。实验采用垂直安装的样品，流体（气体或地层盐水）从样品底部注入，且多相流扫描仅在靠近注入点的底部区域开展。本数据集涵盖了使用氢气、甲烷以及基于分压配比的95:5氢-甲烷混合气体开展的排驱与自吸实验。