Research Article
A Damage Constitutive Model for the Effects of CO2-Brine-Rock Interactions on the Brittleness of a Low-Clay Shale
Table 1
Mineralogy of shale samples (the samples are cored from the same place as mentioned before [
17,
24]).
| X-ray diffraction analysis | Value (%, /) |
| Brittleness component (total) | 72.95 | Quartz | 55.50 | Feldspar | 14.57 | Cristobalite | 2.88 | Clay component (total) | 5.85 | Kaolinite | 1.00 | Illite | 1.42 | Smectite | 3.43 | Others (total) | 20.97 | Pyrite | 4.08 | Calcite | 4.44 | Muscovite | 5.57 | Annite | 1.41 | Marble | 5.10 | Braunite | 0.37 |
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