Table 2: Fracture width of buried hill carbonate reservoir in Nanpu sag.

Items	Bridge particles	The first level filling particles	The second level filling particles	The third level filling particles
Particle diameter	d	0.35d	0.12d	0.04d
Particle concentration (%)	3.3	6.6	18.2	72.9
Volume content (%)	91.2	7.8	0.93	0.7