Table 9 Experimental evaluation of the damage to reservoir core by fracturing fluid.
Core No. | Permeability/ × 10−3μm2 | Damage rate/% | Experimental conditions | |||||
|---|---|---|---|---|---|---|---|---|
Initial | Damage | ΔP/MPa | Shear rate/s−1 | Time/hour | Temperature/°C | Filtrate/mL ± 0.1 | ||
1 | 5.86 | 4.76 | 18.8 | 10 | 170 | 2 | 160 | 4.3 |
2 | 4.73 | 3.87 | 18.2 | 5.7 | ||||
3 | 7.43 | 6.13 | 17.5 | 4.9 | ||||
