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Table 5 Effluent fluid chemistry
From: Thermally driven fracture aperture variation in naturally fractured granites
Experiment | Test conditions | Incremental concentrations and effluent fluid volume | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
\({P}_{\text{co}\_\text{r}}\) (MPa) | \(T_\text{i}\) (\(^\circ\)C) | \(T_\text{f}\) (\(^\circ\)C) | \(\Delta\)t (h) | Al (ppm) | Ca (ppm) | Fe (ppm) | K (ppm) | Na (ppm) | Mg (ppm) | Si (ppm) | Volume (\(\text {cm}^{3}\)) | |
\(\#\)N14-S1 | 20 | 25 | 110 | 70 | 0.00 | 0.41 | 0.01 | 1.07 | 2.34 | 0.04 | 1.31 | 213 |
110 | 25 | 44 | 0.00 | 0.16 | 0.01 | –a | 0.09 | 0.00 | 0.54 | 132 | ||
\(\#\)N14-S2 | 30 | 25 | 110 | 85 | –b | 0.05 | 0.00 | –a | –b | –b | 0.32 | 255 |
110 | 25 | 52 | –b | 0.13 | –b | –a | –b | –b | 0.28 | 156 | ||
\(\#\)N14-S3 | 40 | 25 | 140 | 83 | 0.01 | 0.06 | 0.00 | –a | –b | –b | 3.14 | 249 |
\(\#\)N19-C1 | 20 | 25 | 110 | 51 | 0.00 | 0.73 | 0.02 | 1.59 | 7.93 | 0.14 | 1.45 | 154 |
110 | 25 | 41 | 0.00 | 0.25 | 0.05 | 0.73 | 0.89 | 0.05 | 0.88 | 122 | ||
\(\#\)N19-C2 | 30 | 25 | 110 | 67 | 0.00 | 0.15 | 0.00 | 0.29 | 0.30 | 0.02 | 0.44 | 202 |
110 | 25 | 34 | 0.01 | 0.15 | 0.04 | 0.69 | 0.47 | 0.03 | 1.33 | 101 | ||