Research Article
Mineral Filling Pattern in Complex Fracture System of Carbonate Reservoirs: Implications from Geochemical Modeling of Water-Rock Interaction
Table 3
Parameters for calculating kinetic rate constants of mineral.
| | Minerals | A/(cm2/g) | Neutral mechanism | Acid mechanism | Base mechanism | | k25 (Mol/m2/s) | Ea (KJ/Mol) | k25 | Ea | n(H+) | k25 | Ea | n(H+) |
| | Quartz | 9.8 | 1.023 × 10-14 | 87.7 | | | | | | | | Low-albite | 9.8 | 2.754 × 10-13 | 69.8 | 6.918 × 10-11 | 65 | 0.457 | 2.512 × 10-16 | 71 | -0.572 | | Anorthite | 9.8 | 7.586 × 10-13 | 17.8 | 3.162 × 10-4 | 16.6 | 1.411 | | | | | K-feldspar | 9.8 | 3.890 × 10-13 | 38 | 8.710 × 10-11 | 51.7 | 0.5 | 6.310 × 10-22 | 94.1 | -0.823 | | Calcite | 9.8 | Assumed at equilibrium | | Chlorite | 9.8 | 3.020 × 10-13 | 88 | 7.762 × 10-12 | 88 | 0.5 | | | | | Dolomite | 9.8 | 2.951 × 10-8 | 52.2 | 6.457 × 10-4 | 36.1 | 0.5 | | | | | Siderite | 9.8 | 1.260 × 10-9 | 62.76 | 6.457 × 10-4 | 36.1 | 0.5 | | | | | Ankerite | 9.8 | 1.260 × 10-9 | 62.76 | 6.457 × 10-4 | 36.1 | 0.5 | | | | | Kaolinite | 151.6 | 6.918 × 10-14 | 22.2 | 4.898 × 10-12 | 65.9 | 0.777 | 8.913 × 10-18 | 17.9 | -0.472 | | Illite | 151.6 | 1.660 × 10-13 | 35 | 1.047 × 10-11 | 23.6 | 0.34 | 3.020 × 10-17 | 58.9 | -0.4 | | Na-smectite | 151.6 | 1.660 × 10-13 | 35 | 1.047 × 10-11 | 23.6 | 0.34 | 3.020 × 10-17 | 58.9 | -0.4 | | Ca-smectite | 151.6 | 1.660 × 10-13 | 35 | 1.047 × 10-11 | 23.6 | 0.34 | 3.020 × 10-17 | 58.9 | -0.4 |
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