Fig. 1. A multiply-connected 2D porous structure (G_max=9,G_min=1).

Fig. 2. Chamber-and-throat network model.

Fig. 3. Fractal model of the pore-wall roughness: (a) self-similar fractal surface of the throats; (b) throat roughness features; (c) chamber roughness features.

Fig. 4. (a) and (b) Video-recorded pictures of two successive sections of a porecast of Grey-Vosgues sandstone. The Wood’s metal (pore space) appears white and the resin (solid matrix) appears black. (c) and (d) Digitized negative images of the foregoing successive sections. Pixel size: 2 μm × 2 μm. Resolution of digitization: 500 × 482 pixels/image. Mean distance between serial sections: 7.3 μm.

Fig. 5. Fitting of mercury porosimetry curves to 2- and 5-parameter functions: (a) fitting to the curves of a carbonate; (b) fitting to the curves of a sandstone.

Fig. 6. Method of characterization of a pore structure in terms of chamber-and-throat network models.

Fig. 7. Computer-aided construction of theoretical chamber-and-throat networks.

Fig. 8. Mercury porosimetry curves of Grey-Vosgues sandstone GV-1 (_t=0.18,k=110 md).

Fig. 9. Comparison between 5-parameter analytic fitting functions of the experimental (GV-1) and simulated mercury intrusion/retraction curves. Uncorrelated chamber-and-throat networks with: (a) unimodal and (b) bimodal TSDs.

Fig. 10. Comparison between 5-parameter analytic fitting functions of the experimental (GV-1) and simulated mercury intrusion/retraction curves. Strongly c–c and c–t correlated chamber-and-throat networks with bimodal TSDs.

Fig. 11. Comparison of the TSDs obtained from the present method with the TSDs obtained from the serial sectioning analysis and the differentiation of the mercury intrusion curve.

Table 1. Topological and geometrical properties of the reconstructed pore space (sample: GV-1)

Table 2. Parameters of the fitting functions of simulated mercury intrusion/retraction curves

Table 3. Covariance matrix

Table 4. Parameters of the theoretical chamber-and-throat networks used in simulations

Table 5. Parameters of the component distribution functions of the CSD and TSD

Table 6. Parameters of the analytic fitting functions of mercury intrusion/retraction curves