The coring tools are used for acquisition of the rock core in petroleum drilling. Every time one to three sections of inner barrels and outer barrels can be run in core drilling. They can be applied in soft, moderate and rigid rock formations. The series of tools manufactured are as followed: Qing 84-I type ,Chuan 8-3 type, Chuan 8-4 type .
Technical parameters and specifications
Series | Type | Outer barrel size(mm) | Inner barrel size(mm) | Section Length (mm) | O.D. of Core (mm) | Hole size (mm) |
O.D.×I.D. ×Wall thickness(mm) | O.D.×I.D. ×Wall thickness(mm) | |||||
Qing84–I | Q84–I | Φ180×Φ144×18 | Φ127×Φ108×9.5 | 9000 | 101.6 | 216–245 |
Chuan 8–3 | CQ83 | Φ180×Φ144×18 | Φ127×Φ112×7.5 | 9000 | 105 | 216–245 |
CQ83 | Φ180×Φ144×18 | Φ121×Φ112×7.5 | 9000 | 105 | 216–245 | |
Chuan 7–4 | CQ172 | Φ172×Φ136×18 | Φ127×Φ105×8.0 | 9000 | 101.6 | 190–245 |
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