Influence of Migration and Plugging of Nanoparticles on Coal Permeability in Coal Reservoirs

Table 4

Particle size and content distribution of the solid phase in the working liquid system after pollution.

Particle size (μm)	0.003	0.008	0.02	0.1	0.15	0.2	0.4	0.42	0.45	0.5	Notes
Content distribution (%)	0.16	2.49	7.21	20.75	26.97	33.12	53.12	54.75	57.14	60.87	Distilled water
	0.02	2.35	8.02	22.80	29.15	35.50	56.06	57.76	61.26	62.13	KCl
	0.01	1.98	7.22	23.23	29.76	38.05	59.68	62.08	64.15	65.21	DPC