Fracability Evaluation Method and Influencing Factors of the Tight Sandstone Reservoir

Table 4

Fracability classification of tight sandstone reservoir.

Reservoir type	Brittleness index	Fracture energy density	Horizontal stress anisotropy coefficient	Fracture development index	Fracability index	Fracability degree
I	0.5 ~ 1	0.7 ~ 1	0.6 ~ 1	0.5 ~ 1	0.569~ 1	High
II	0.3 ~ 0.5	0.5 ~ 0.7	0.4 ~ 0.6	0.3 ~ 0.5	0.369~ 0.569	Moderate
III	0 ~ 0.3	0 ~ 0.5	0 ~ 0.4	0 ~ 0.3	0 ~ 0.369	Low