micro-XRCT data set of an in-situ flow experiment with an X-ray transparent flow cell

Micro-XRCT data sets (projection and reconstructed images) of an in-situ experiment with an X-ray transparent flow cell. As a porous medium, a 3 mm cylindrical sandstone core from the County of Bentheim was investigated. The conceptual design of the cell was presented in Fusseis et al. (2014) and offers the possibility to apply a confining and backpressure, and to inject a pore fluid under X-ray radiation. Two scans were performed. The first scan was performed on the dry sample. The second scan was performed after the sample was saturated with 3M KI solution (3 mol potassium iodide per liter distilled water) with a constant flow of 100 µl/s against a backpressure of 0.28 MPa. To prevent hydrogen formation due to the X-rays, a flow of 0.5 µl/s was maintained against a backpressure of 0.28 MPa during the entire second scan. Both scans were performed under the same confining pressure of 0.6 MPa and with identical scan settings.

显微X射线计算机断层扫描（Micro-XRCT）数据集包含投影图像与重建图像，源自一项搭载X射线透明流动池的原位实验。本次实验以取自本特海姆县的3毫米圆柱形砂岩岩心作为多孔介质。该流动池的概念设计由Fusseis等人于2014年发表，其可施加围压与背压，并支持在X射线辐射环境下注入孔隙流体。实验共开展两次扫描：首次扫描针对干燥岩心样品；第二次扫描则在样品以100 μl/s的恒定流速、0.28 MPa背压注入3M碘化钾溶液（每升蒸馏水含3摩尔碘化钾）完成饱和后进行。为避免X射线照射引发氢气生成，第二次扫描全程均以0.5 μl/s的流速维持0.28 MPa的背压。两次扫描均采用相同的0.6 MPa围压与一致的扫描参数设置。