Numbering | Fracturing fluid type | Original permeability/um2 | Penetration after injury/um2 | Penetration rate Damage rate /% |
1 | Clean slippery water fracturing fluid | 7.87 × 10−3 | 6.43 × 10−3 | 18.34 |
2 | Oil-based emulsion slippery water fracturing fluid | 2.16 × 10−4 | 5.00 × 10−4 | 76.84 |
3 | Guar gum fracturing fluid | 6.3 × 10−3 | 6.70 × 10−4 | 89.36 |