Laboratory Study on Core Fracturing Simulations for Wellbore Strengthening

Table 3

The size distribution of particles used in the experiment.

Gradation	XA	A0	A	A1	A2	B
Mesh number	30-40	40-60	60-120	60-80	80-120	>120
Diameter (mm)	0.6-0.425	0.425-0.25	0.25-0.125	0.25-0.18	0.18-0.125	0.125<
Gradation	B1	B2	B3	B4	C	D
Mesh number	120-150	150-180	120-180	180-325	>325	1000
Diameter (mm)	0.125-0.106	0.106-0.083	0.125-0.083	0.083-0.047	0.047<	0.013