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首页> 外文期刊>Journal of Hydrology >Nondestructive high-resolution visualization and measurement of anisotropic effective porosity in complex lithologies using high-resolution X-ray computed tomography
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Nondestructive high-resolution visualization and measurement of anisotropic effective porosity in complex lithologies using high-resolution X-ray computed tomography

机译：使用高分辨率X射线计算机断层扫描技术对复杂岩性中的各向异性有效孔隙率进行无损高分辨率可视化和测量

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摘要

New methods are presented that allow high-resolution X-ray computed tomography (HRXCT) to be utilized for imaging and measuring the effective porosity field of mineralogically complex specimens at resolutions in the 5-100 mum range. These methods extend previous established approaches by allowing sample displacement between successive imaging runs and eliminating the need for a highly-attenuating tracer. A highly detailed map of partial porosity can be generated by scanning a sample in a dry state and infiltrated by distilled water, and performing a three-dimensional alignment of the two data sets. This map can-then be used to obtain a number of quantitative analyses, such as the frequency distribution of partial porosity and directional analysis to infer flow anisotropy. It can also be used for petrographic study of the relationship of porosity to evolving mineralogy in a dynamic system. These methods are demonstrated on a series of altered volcanic rocks from a deep-sea hydrothermal field. (C) 2004 Elsevier B.V. All rights reserved.
机译：提出了允许使用高分辨率X射线计算机断层扫描（HRXCT）成像和测量矿物学上复杂的标本的有效孔隙度，分辨率在5-100微米范围内的新方法。这些方法通过允许在连续成像运行之间移动样本并消除了对高衰减示踪剂的需求，扩展了先前建立的方法。通过在干燥状态下扫描样品并用蒸馏水渗透，然后对两个数据集进行三维对齐，可以生成高度详细的局部孔隙率图。然后，该图可用于获得大量定量分析，例如部分孔隙度的频率分布和方向分析以推断流动各向异性。它也可用于岩石学研究动力系统中孔隙度与演化矿物学之间的关系。这些方法在来自深海热液场的一系列蚀变的火山岩上得到了证明。 （C）2004 Elsevier B.V.保留所有权利。

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