Experimental Study on the Stress Sensitivity and Influence Factors of Shale under Varying Stress

Table 3

Evaluation parameters of stress sensitivity for the shale reservoir.

Sample ID	Permeability/10^−3µm^2		Permeability damage rate/%	Average value of stress sensitivity coefficient/MPa^−1
	3 MPa	11 MPa
1	0.00592	0.00296	61.44	0.04867
2	0.00525	0.00198	73.93	0.05511
3	0.00691	0.00265	73.23	0.05481
4	0.00713	0.00273	73.32	0.05485
5	0.00493	0.00218	67.69	0.05218
Maximum value	0.00713	0.00296	73.93	0.05485
Minimum value	0.00493	0.00198	61.44	0.04867
Average value	0.00603	0.00249	69.92	0.05312