Cyclic Injection to Enhance Hydraulic Fracturing Efficiency: Insights from Laboratory Experiments

Table 5

Sources of data for the cyclic injection curve fitting (cyclic breakdown pressure/conventional breakdown pressure vs. number of cycles).

Authors	Rock type
Kang et al. [12]	Tight Xujiahe sandstone
Kang et al. [12]	Normal Xujiahe sandstone
Patel et al. [4]	Tennessee sandstone
Goyal et al. [5]	Tennessee sandstone
Zhuang et al. [16, 17]	Pocheon granite
Diaz et al. [18, 19]	Pocheon granite
Stephansson et al. [20]	Pocheon granite
Liang et al. [21]	Concrete
Tariq et al. [8]	Concrete