Research Article
A Damage Constitutive Model for the Effects of CO2-Brine-Rock Interactions on the Brittleness of a Low-Clay Shale
Table 2
The soaking arrangement of shale samples.
| | Condition | Group number | Temperature (°C) | Pressure (MPa) | Time (day) |
| | Intact | 1 | 22 | — | — | | Subcritical CO2 + NaCl | 2 | 40 | 7 | 10 | | 3 | 40 | 7 | 20 | | 4 | 40 | 7 | 30 | | Supercritical CO2 + NaCl | 5 | 40 | 9 | 10 | | 6 | 40 | 9 | 20 | | 7 | 40 | 9 | 30 |
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