Research Article
Cyclic Injection to Enhance Hydraulic Fracturing Efficiency: Insights from Laboratory Experiments
Table 4
Some average results for the second batch of sandstone.
| Parameter | Conventional injection | Cyclic injection |
| Averaged breakdown pressure (MPa) | 27.15 | 25.20 | Standard deviation of the breakdown pressure (MPa) | 7.38 | 0.81 | Averaged uniaxial compressive strength (MPa) (all 6 specimens) | 48.43 | Averaged Brazilian tensile strength (MPa) (all 6 specimens) | 2.23 |
|
|