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