Figure 6 | Scientific Reports

Figure 6

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

Figure 6

Plots comparing the mean pore and throat radii, coordination number and throat length across all sample suites against porosity. Hollow data points represent connected porosity measurements whilst filled data points represent total porosity measurements. Generally, each characteristic shows a positive relationship with porosity. When investigating the pore characteristics (a, c) there is a clear vertical displacement between the connected and total porosity measurements. This is not present when investigating the throat characteristics (b, d) where the two measurement types strongly overlap. The difference in vertical displacement between the pore and throat measurements indicates that the pores are apparently more influential on contributing to connectivity than the throats.

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