Research Article
Microscopic Pore Structures and Their Controlling Factors of the Lower Carboniferous Luzhai Shale in Guizhong Depression, China
Table 2
Parameters of shale pore structure obtained by high-pressure mercury intrusion, nitrogen adsorption, and small-angle scattering.
| | Sample ID | MIP | LTNA | SAXS | | Pore volume (10-3 cm3/g) | SSA (m2/g) | Average pore diameter (nm) | Efficiency of mercury withdrawal (%) | BJH pore volume (10-3 cm3/g) | BET SSA (m2/g) | Average pore diameter (nm) | Pore volume (10-3 cm3/cm3) | SSA (m2/g) | Average pore diameter (nm) |
| | GRY-1 | 4.18 | 1.59 | 10.51 | 57 | 20.66 | 8.64 | 11.63 | 13.73 | 9.28 | 17.73 | | GRY-2 | 5.05 | 2.01 | 10.04 | 58 | 14.30 | 7.48 | 10.11 | 13.32 | 8.55 | 18.48 | | GRY-3 | 7.17 | 1.76 | 16.27 | 37 | 23.02 | 12.86 | 8.96 | 20.50 | 13.41 | 18.84 | | GRY-4 | 4.60 | 1.35 | 13.60 | 33 | 16.61 | 5.36 | 14.67 | 10.59 | 7.26 | 17.07 | | GRY-5 | 7.77 | 3.17 | 9.82 | 53 | 29.74 | 16.47 | 9.28 | 13.10 | 9.86 | 16.13 | | GRY-6 | 7.68 | 2.51 | 12.23 | 44 | 23.05 | 17.24 | 6.94 | 20.87 | 14.89 | 18.09 | | GRY-7 | 9.60 | 3.23 | 11.91 | 54 | 22.39 | 11.38 | 12.63 | 18.22 | 12.75 | 17.99 | | GLD-1 | 6.54 | / | 29.70 | 28 | 7.9 | 4.08 | 12.10 | / | / | / | | GLD-2 | 7.16 | / | 32.00 | 29 | 8.2 | 6.01 | 9.87 | / | / | / | | GLD-3 | 6.14 | / | 42.90 | 20 | 5.2 | 4.86 | 9.30 | / | / | / | | PM-C1 | 37.75 | 15.00 | / | 26 | 47.09 | 22.65 | 8.32 | / | / | / | | PM-C2 | 30.35 | 14.36 | / | 17 | 29.37 | 20.66 | 5.69 | / | / | / | | PM-C3 | 59.50 | 8.49 | / | 12 | 42.51 | 15.97 | 10.65 | / | / | / | | PM-C4 | 29.50 | 5.25 | / | 15 | 22.99 | 9.41 | 9.77 | / | / | / | | PM-C5 | 30.85 | 7.33 | / | 9 | 22.73 | 14.72 | 6.18 | / | / | / | | PM-B1 | 27.25 | 10.40 | / | 19 | 23.38 | 21.86 | 4.28 | / | / | / | | PM-B2 | 34.75 | 8.67 | / | 5 | 22.59 | 14.80 | 6.10 | / | / | / | | PM-B3 | 31.40 | 9.78 | / | 6 | 20.56 | 16.71 | 4.92 | / | / | / | | PM-B4 | 59.75 | 11.08 | / | 10 | 36.57 | 16.59 | 8.82 | / | / | / |
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