Fracturing fluid type performance | Clean slippery water fracturing fluid | Oil-based emulsion slippery water fracturing fluid | Guar gum fracturing fluid |
Fracturing fluid formula | 0.1% JHFR-2D drag reducer + 0.2% JHFD-2 multifunctional additive | 0.1% A agent + 0.2% B agent | 0.1% guar gum + 0.5% drainage aid + 0.3% demulsifier |
Compatibility | good | not good | not good |
Drag reduction rate, % | 76.2 | 79.5 | 73.9 |
Core permeability damage rate, % | 18.34 | 76.84 | 89.36 |
Biological toxicity, EC50, mg/L | 1.89 × 106 (Non-toxic) | 1.13 × 103 (Slightly poisonous) | 1.06 × 106 (Non-toxic) |
Kinematic viscosity, mm2/s | 1.37 | 3.30 | 3.21 |
Surface tension, mN/m | 23.42 | 29.92 | 27.41 |
Anti-swelling rate, % | 81.12 | 40.00 | 46.88 |