The Wireline Core Barrel Head assembly provides: latching and pivoting spearpoint mechanisms to allow insertion and retrieval of the inner tube assembly, a bearing assembly to allow the inner tube to remain stationary and avoid sample damage while drilling, fluid pressure operating indications and fluid control valves.
All head assemblies incorporate a shut off valve assembly which provides a fluid pressure signal to the drill operator when the valve members are compressed, indicating a full or blocked inner tube.
Sinocoredrill head assembly features long life span, good compatibility with parts like inner tube and outer tube from other vendors, and availability in all spare parts.
Wireline double core barrel consists of:
1. Head Assembly
2. Inner Tube: 1.5m or 3.0m
3. Stop Ring
4. Core Lifter
5. Core Lifter Case
6. Locking Coupling
7. Adapter Coupling
8. Landing Ring
9. Outer Tube: 1.5m or 3.0m
10. Inner Tube Stabilizer
Core sizes:
Double tube surface | ||||
Size(surface exploration drill) | Metric system(mm) | Imperial system(in) | ||
Hole diameter | Core diameter | Hole diameter | Core diameter | |
BQ | 60 | 36.4 | 2.36 | 1.43 |
NQ | 75.7 | 47.6 | 2.98 | 1.88 |
HQ | 96.1 | 63.5 | 3.78 | 2.5 |
PQ | 122.7 | 85 | 4.83 | 3.34 |
Triple tube surface | ||||
NQ3 | 75.7 | 45 | 2.98 | 1.78 |
HQ3 | 96.1 | 61.1 | 3.78 | 2.41 |
PQ3 | 122.7 | 83 | 4.83 | 3.27 |
Sinocoredrill products are manufactured by using high quality raw materials and designed according to DCDMA, wire-line –Q standard.
