Full scale, microscopically resolved tomographies of sandstone and carbonate rocks augmented by experimental porosity and permeability values

<strong>About the Data</strong> We report a dataset containing full-scale, three-dimensional images of rock plugs for application in digital rock and capillary network analysis. Specifically, we have acquired microscopically resolved tomography datasets of 18 cylindrical sandstone and carbonate rock samples having lengths of 25.4 mm and diameters of 9.5 mm, respectively. The rock plug samples measured in this work have porosity and permeability values ranging from 8% to 30% and 0.4 mD to above 5D, respectively. <br> <strong>Dataset Structure</strong> Researchers interested in using this dataset will find five different volume types and formats for each sample. The suffix inside the parenthesis designates the naming scheme used for the dataset files: <br> <strong>Full Frame</strong> <em><strong>(_grayscale_full</strong></em><strong>):</strong> Data obtained from the reconstruction of the µCT projections. During reconstruction, the volume edges are removed but the largest inscribed parallelepiped within the plug is retained, thus leading to different sized parallelepipeds. <strong>Standard</strong> <em><strong>(_grayscale_standard</strong></em><strong>):</strong> Volume cropped into a standard size of 2500x2500x7500 voxels. <strong>Cropped</strong> <strong>cubes (_grayscale_ROI-X) :</strong> 2500x2500x2500 voxel cubes extracted from the standard volume. The X designates the number of the cube, with values ranging from 1 to 3, cut top-down from the parallelepiped. <strong>Filtered cubes (_grayscale_filtered_ROI-X):</strong> Data obtained from the grayscale cubes through the application of contrast enhancement and noise reduction filters. The X designates the number of the cube, with values ranging from 1 to 3, cut top-down from the parallelepiped. <strong>Binarized cubes (_binary_ROI-X):</strong> Binary image data obtained from the filtered grayscale cubes. Each grayscale cube was segmented at threshold level calculated using the Multi-Otsu algorithm with a number of classes set to three. The X designates the number of the cube, with values ranging from 1 to 3, cut top-down from the parallelepiped. Alongside the volumes described above, the following supporting information is also provided: <strong>HDR file:</strong> File containing the cube size information for each sample. File Naming The <strong>Dataset_Structure.xlsx</strong> file contains the file naming scheme for each file type of each sample. <br> After extracting the compressed files from the original <strong>.tar.bz2 </strong>formats, the filename may change. Please refer to the table in case there is any problems identifying the files. Further Information For further information on the methods used in this work, please check our related research paper at: <strong>TBA</strong> <br>

<strong>关于数据</strong> 我们报告了一个包含岩心塞全尺度三维图像的数据集，适用于数字岩石和毛细管网络分析。具体而言，我们获取了18个圆柱形砂岩和碳酸盐岩样品的显微分辨率断层扫描数据集，其长度分别为25.4毫米，直径分别为9.5毫米。本研究中测量的岩心塞样品孔隙度范围为8%至30%，渗透率范围为0.4毫达西（mD）至5达西（D）以上。<br><strong>数据集结构</strong> 有意使用该数据集的研究人员将为每个样品找到五种不同的体积类型和格式。括号内的后缀指定了数据集文件的命名方案：<br><strong>全帧</strong><em><strong>(_grayscale_full</strong></em><strong>)：</strong> 从微计算机断层扫描（µCT）投影重建得到的数据。重建过程中移除了体积边缘，但保留了岩心塞内最大的内接平行六面体，因此形成了不同大小的平行六面体。<strong>标准</strong><em><strong>(_grayscale_standard</strong></em><strong>)：</strong> 裁剪为2500x2500x7500体素（voxel）标准大小的体积。<strong>裁剪立方体（_grayscale_ROI-X）：</strong> 从标准体积中提取的2500x2500x2500体素立方体。X表示立方体编号，取值范围为1至3，从平行六面体自上而下切割。<strong>滤波立方体（_grayscale_filtered_ROI-X）：</strong> 通过应用对比度增强和降噪滤波器从灰度立方体获得的数据。X表示立方体编号，取值范围为1至3，从平行六面体自上而下切割。<strong>二值化立方体（_binary_ROI-X）：</strong> 从滤波后的灰度立方体获得的二值图像数据。每个灰度立方体在使用多Otsu算法（Multi-Otsu algorithm）计算的阈值水平上进行分割，类别数设置为3。X表示立方体编号，取值范围为1至3，从平行六面体自上而下切割。除上述体积外，还提供以下支持信息：<strong>HDR文件：</strong> 包含每个样品立方体大小信息的文件。文件命名 <strong>Dataset_Structure.xlsx</strong> 文件包含每个样品每种文件类型的命名方案。<br>从原始<strong>.tar.bz2</strong>格式解压文件后，文件名可能会改变。如有文件识别问题，请参考表格。更多信息 关于本研究中使用的方法的更多信息，请查阅我们的相关研究论文：<strong>待公布（TBA）</strong><br>