X-ray micro-tomography dataset of Ketton carbonate

The images in this dataset are a sample of Ketton carbonate from a micro-computed tomography (micro-CT) scan acquired with a voxel resolution of 4.52 ┬Ám. This dataset is part of a study on the effects of Voxel Resolution in a study of flow in porous media. A brief overview of this study summarised from Shah et al 2015 follows. A fundamental understanding of flow in porous media at the pore-scale is necessary to be able to upscale average displacement processes from core to reservoir scale. The study of fluid flow in porous media at the pore-scale consists of two key procedures: Imaging reconstruction of three-dimensional (3D) pore space images; and modelling such as with single and two-phase flow simulations with Lattice-Boltzmann (LB) or Pore-Network (PN) Modelling. Here we analyse pore-scale results to predict petrophysical properties such as porosity, single phase permeability and multi-phase properties at different length scales. The fundamental issue is to understand the image resolution dependency of transport properties, in order to up-scale the flow physics from pore to core scale. Shah, S M, Gray, F, Crawshaw, J P, and Boek, E S. 2015. Micro-Computed Tomography pore-scale study of flow in porous media: Effect of Voxel Resolution. Advances in Water Resources July 2015 doi:10.1016/j.advwatres.2015.07.012
non geographic dataset - non geographic dataset
Geoscientific information
GEMET - INSPIRE themes: BGS Thesaurus of Geosciences:
X rays
Carbon capture and storage
creation: 2017, publication: 2019
2013 - 2017
Qatar Carbonates and Carbon Storage Research Centre
, United Kingdom
email: not available
Role: point of contact
Imperial College London
Saurabh M Shah
London, United Kingdom
email: not available
Role: author
Imperial College London
Saurabh M Shah
London, United Kingdom
email: not available
Role: point of contact

Data Quality

Dry scans of small cylindrical sandstone and carbonate cores (5 mm diameter and 10 mm length) were scanned using a laboratory micro-CT scanner, a Versa XRM-500 X-Ray Microscope (Zeiss X-Ray Microscopy, Pleasanton, CA, USA). X-rays from a micro-focused X-ray source are used to look into the sample. The X-ray source produces a polychromatic X-ray beam and the projection data (3000 projections) were collected with a cone beam along the circular trajectory. The voltage was set at 80 kV and power at 7W. In our cone beam set-up, the voxel resolution is controlled by the proximity of the sample to the beam or X-ray source. The 3D pore-scale images of the samples were scanned at four different voxel resolutions acquiring the same physical field of view by adjusting the X-ray source and detector position along with using an appropriate magnification lens.
INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology
Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services


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Metadata about metadata

British Geological Survey
Mowat,Mary R
The Lyell Centre, Research Avenue South, EDINBURGH, EH14 4AP, United Kingdom
tel: +44 131 667 1000
email: enquiries@bgs.ac.uk
Role: point of contact

Coupled Resource