Research Article
Hydraulic Fracturing Behavior in Shale with Water and Supercritical CO2 under Triaxial Compression
Table 5
Variation of the fracture width during the hydraulic fracturing experiments.
| | No. | Bedding plane angle (°) | Fracturing fluid | Maximum width (mm) | Opening width (mm) | Closure (mm) | Closure proportion (closure/max) (%) |
| | W1 | 0° | Water | 0.428 | 0.019 | 0.409 | 96 | | S1 | 0° | SC-CO2 | 1.054 | 0.039 | 1.015 | 96 | | W7 | 90° | Water | 0.052 | 0.014 | 0.038 | 73 | | S7 | 90° | SC-CO2 | 1.000 | 0.040 | 0.960 | 96 |
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