Research Article
A Damage Constitutive Model for the Effects of CO2-Brine-Rock Interactions on the Brittleness of a Low-Clay Shale
Table 5
Distribution parameters of intact and soaked samples.
| Soaking condition | Intact | Subcritical CO2 + NaCl | Supercritical CO2 + NaCl | Soaking time (day) | — | 10 | 20 | 30 | 10 | 20 | 30 |
| | Power | | 3.5486 | 1.9647 | 1.7975 | 2.1911 | 4.2002 | 1.751 | 2.1087 | | 0.1517 | 0.0807 | 0.0693 | 0.0959 | 0.1745 | 0.0649 | 0.0909 | Weibull | | 3.6965 | 2.1111 | 1.9437 | 2.3379 | 4.3485 | 1.897 | 2.2554 | | 0.2326 | 0.3384 | 0.3688 | 0.3426 | 0.2391 | 0.4303 | 0.3906 | | Power | | 2.3657 | 1.3098 | 1.1983 | 1.4607 | 2.8002 | 1.1673 | 1.4058 | | 0.0809 | 0.0301 | 0.0238 | 0.0372 | 0.0967 | 0.0202 | 0.0326 | Weibull | | 2.4644 | 1.4074 | 1.2958 | 1.5586 | 2.899 | 1.2647 | 1.5036 | | 0.3154 | 0.6365 | 0.7417 | 0.5976 | 0.3049 | 0.8833 | 0.6991 | | Power | | 1.1829 | 0.6549 | 0.5992 | 0.7304 | 1.4001 | 0.5837 | 0.7029 | | 0.0208 | 0.0026 | 0.0016 | 0.0037 | 0.0278 | 0.001 | 0.0025 | Weibull | | 1.2322 | 0.7037 | 0.6479 | 0.7793 | 1.4495 | 0.6323 | 0.7518 | | 0.2459 | 1.3985 | 2.0432 | 1.0242 | 0.1978 | 2.6129 | 1.3028 |
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