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Figure 1

From: The upper percolation threshold and porosity–permeability relationship in sandstone reservoirs using digital image analysis

Figure 1

Examples of the material used for imaging and the resulting μCT and optical microscopy images in both XPL and PPL. (a) Shows the cut plug and mini-plug used for μCT imaging from three samples: EC1, EC17 and EC21, showing the range of materials from the English Channel sample suite. (b–g) show μCT images with phases labelled and XPL and PPL optical microscopy images of samples EC7, EC17 and EC18 respectively. In the PPL images the blue phase is a dyed resin to facilitate identification of the pore space.

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