Research Article
Preparation of Oil-Based Foam Gel with Nano-SiO2 as Foam Stabilizer and Evaluation of Its Performance as a Plugging Agent for Fractured Shale
| Experiment number | Inflow velocity (mL/s) | Temperature (°C) | Annulus pressure (MPa) | Sand diameter (mm) | Whether to add plugging agent | Core diameter/length(mm) | Porosity (%) | Permeability (10-3 m2) |
| 1 | 1 | 80 | 6 | 0.850 | No | 25/50 | 6.2 | 1.790 | 2 | 1 | 80 | 6 | 0.850 | Yes | 25/50 | 6.2 | 1.790 | 3 | 2 | 80 | 7 | 0.850 | No | 25/50 | 5.4 | 0.981 | 4 | 2 | 80 | 7 | 0.850 | Yes | 25/50 | 5.4 | 0.981 | 5 | 1 | 80 | 6 | 0.425 | No | 25/50 | 4.8 | 0.869 | 6 | 1 | 80 | 6 | 0.425 | Yes | 25/50 | 4.8 | 0.869 | 7 | 2 | 80 | 7 | 0.425 | No | 25/50 | 4.6 | 0.808 | 8 | 2 | 80 | 7 | 0.425 | Yes | 25/50 | 4.6 | 0.808 | 9 | 1 | 80 | 6 | 0.180 | No | 25/50 | 4.4 | 0.782 | 10 | 1 | 80 | 6 | 0.180 | Yes | 25/50 | 4.4 | 0.782 | 11 | 2 | 80 | 7 | 0.180 | No | 25/50 | 4.2 | 0.691 | 12 | 2 | 80 | 7 | 0.180 | Yes | 25/50 | 4.2 | 0.691 |
|
|