Jiangsu Sinocoredrill Exploration Equipment Co., Ltd
SINOCOREDRILL GROUP CO.,LTD " One-Stop of Geological Exploration Equipment Supplier "
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China Wireline Core Barrel BWL3 NWL3 HWL3 PWL3 Stainless Steel Triple Tube Core Barrel 1.5m
The double tube wireline core barrel is converted to triple tube by incorporating a split steel tube inside the inner tube. In addition, a piston and pump-out adaptor is provided for pumping out the split steel tube when it is full of rock core. The stop ring, core lifter case and core lifter also differ from the standard double tube core barrel, being slightly smaller in diameter in order to accept and retain the slightly smaller core.
Advantages:
1.Faster coring at greater depths
2.Good stability due to constant diameter of the drill string
3.excellent hydraulics
4.Good core recovery
| Specification | Wireline Triple Tube Core Barrels | |||
| BWL3 | NWL3 | HWL3 | PWL3 | |
| Hole Diameter (mm) | 59.9 | 75.7 | 96.3 | 122.8 |
| Core Diameter (mm) | 33.5 | 45.1 | 61.1 | 83.1 |
| Kerf / Crown Thickness (mm) | 13.05 | 15.1 | 17.35 | 19.45 |
| Cutting Area (cm2) | 19.6 | 29.0 | 43.5 | 64.2 |
| Hole Area (cm2) | 28.3 | 45.0 | 72.8 | 118.5 |
| Cutting Area as % of Hole Area | 69% | 64% | 60% | 54% |
| Core Area (cm2) | 8.7 | 16.0 | 29.3 | 54.3 |
| Recommended Drill Rod | BQ | NQ | HQ | PQ |
| Recommended Casing | BW | NW | HW | PW |
1. Head Assembly
2. Pump-out Adaptor
3. Piston Plug
4. O Ring
5. Core Ejection Piston
6. Split Inner Tube 1.5m or 3.0m
7. Inner Tube 1.5m or 3.0m
8. Stop Ring
9. Core Lifter
10. Core Lifter Case
11. Locking Coupling
12. Adaptor Coupling
13. Landing Ring
14. Outer Tube 1.5m or 3.0m
15. Inner Tube Stabilizer
16. Thread Protector
