Table 7 Conditional rate constants for the cement phases estimated from fits of the solution composition and anhydrous cement composition for each experiment.
From: Experimental Study of Cement - Sandstone/Shale - Brine - CO2Interactions
Phase | Experiment | log k (mol/s/mol-mineral) |
|---|---|---|
Anhydrite | aCement:Brine | -6.2 |
| Â | bCement:Brine | -7.3 |
|  | Sandstone ± cement | -6.3 |
|  | Shale ± cement | -6.9 |
Hydrogarnet-Fe | aCement:Brine | -6.2 |
| Â | bCement:Brine | -7.3 |
|  | Sandstone ± cement | -6.3 |
|  | Shale ± cement | -6.9 |
Hydrotalcite | aCement:Brine | -5.5 |
| Â | bCement:Brine | -6.6 |
|  | Sandstone ± cement | -5.6 |
|  | Shale ± cement | -6.2 |
Brucite | aCement:Brine | -5.5 |
| Â | bCement:Brine | -6.6 |
|  | Sandstone ± cement | -5.6 |
|  | Shale ± cement | -6.2 |
Portlandite | aCement:Brine | -5.5 |
| Â | bCement:Brine | -6.6 |
|  | Sandstone ± cement | -5.6 |
|  | Shale ± cement | -6.2 |
Pseudowollastonite | aCement:Brine | -6.2 |
| Â | bCement:Brine | -7.3 |
|  | Sandstone ± cement | -6.3 |
|  | Shale ± cement | -6.9 |
Amorphous Fe(OH)3 | Sandstone | -8.6 |
Calcite | bCement:Brine | -8.0 |
Calcite | Shale ± cement | -7.0 |
FeCO3 | Shale ± cement | -10.0 |