Study on Postfrac Softening Mechanism of Deep Marine Shale Reservoir in South Sichuan Basin

Figure 9

CT scanning results of Well N2 core immersed in the liquids. (a) Dry sample. (b) Sample immersed in the water for 10 d. (c) Sample immersed in the flowback fluid for 10 d.

(a)

(b)

(c)