Residual air in air/brine systems

The objective of this study was to obtain pore-scale images of residual gas in three different pore structures using X-ray computed microtomography in order to measure gas ganglia capillary pressures using air/brine interfacial curvature measurements. The present data set consists of raw images of air and brine after a gravity-driven imbibition in three samples: a glass bead pack, a Boise sandstone and a Fontainebleau sandstone, acquired with various resolution (2X - 4X/5X - 10X) leading to voxel sizes ranging from 4.44 µm to 0.64 µm. All the data were acquired at the Beamline 8.3.2 (Synchrotron-based Hard X-ray Micro-Tomography) at the Advanced Light Source, Lawrence Berkeley National Laboratory.本研究旨在借助X射线显微计算机断层扫描（X-ray computed microtomography）获取三种不同孔隙结构内残余气体的孔隙尺度图像，进而通过气/盐水界面曲率测量计算气体团的毛细管压力。 本数据集包含三个样品经重力驱动渗吸后得到的气、盐水原始图像，样品分别为玻璃珠充填模型、博伊西砂岩以及枫丹白露砂岩。本次图像采集采用了2X-4X/5X-10X的多分辨率参数，对应体素尺寸范围为4.44 μm至0.64 μm。 所有数据均采集自劳伦斯伯克利国家实验室先进光源的8.3.2光束线（同步辐射硬X射线显微计算机断层扫描装置）。