An Experimental Study on Coal Fines Migration during Single Phase Water Flow

Figure 11

Permeability evolution under different confining pressure (flow velocity of 3 mL/min).

(a) No coal fines intrusion

(b) 80-120 mesh

(c) 120-160 mesh

(d) 160-200 mesh

(e) 200-300 mesh

(f) 300+ mesh