01 / 02A shale-gas staged-fracturing system combining a delayed-opening toe sleeve with a large-bore dissolvable plug. It supports casing pressure testing before opening and restores a large production passage after the temporary plug dissolves.
| Parameter | Value |
|---|---|
| Casing size | 5-1/2 |
| OD (mm) | 190 |
| ID (mm) | 114.3 |
| Overall length (mm) | 1825 |
| Delay time (min) | 15-30 |
| Pressure capacity (MPa) | 138 |
| Activation pressure (MPa) | 70–105 |
| Temperature rating (°C) | 150 |
Designed for efficient plug-and-perforate staged fracturing in shale-gas wells.
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