EN
BQU/ NQU/ HQU Underground Wireline Core Barrel Assembly
The horizontal wireline coring tool is designed for horizontal, upward, and high-angle holes. It uses hydraulic pumping to run the inner tube assembly to bottom and wireline retrieval, enabling coring without tripping the drill string.
Single rod length: 1.5m / 3m (standard)
Drill pipe material: 42MnMoB/ZT850, yield strength ≥ 950MPa
Joint material: 30CrMnSiA, CNC precision thread
Applicable depth: 0–3000m (deep hole reinforced type)
Description
Underground Wireline Core Barrel Assembly is specifically designed for horizontal holes, inclined holes, and large-angle inclined holes. It uses the hydraulic pump-in method to send the inner pipe assembly to the bottom of the hole. Combined with the rope retrieval technique, the core extraction operation can be completed without lifting the drill pipe. The core extraction core components of this drill tool can be interchanged with those of vertical drilling tools, balancing the convenience of use and economic benefits, and fully meeting the efficient core extraction requirements for various non-vertical working conditions.
Single rod length: 1.5m / 3m (standard)
Drill pipe material: 42MnMoB/ZT850, yield strength ≥ 950MPa
Joint material: 30CrMnSiA, CNC precision thread
Applicable depth: 0–3000m (deep hole reinforced type)
Specifications
| Model | Drill Bit | Reaming O.D | outer tube | inner tube | Drill Rod | |||
| O.D | I.D | O.D | I.D | O.D | I.D | |||
| BQU | 58.9 | 36.4 | 59.2 | 57.2 | 46 | 43 | 38 | BQ |
| NQU | 75.3 | 47.6 | 75.5 | 73 | 60.3 | 55.6 | 50 | NQ/NQA |
| HQU | 95.5 | 63.6 | 95.9 | 92.1 | 77.8 | 73 | 66.7 | HQ/HQA |
Core advantage
1.Hydraulic Delivery: Ensures reliable inner tube placement in horizontal/upward holes.
2.Interchangeable Parts: BQU/NQU/HQU sizes; key components compatible with vertical wireline tools.
3.High Efficiency: Continuous coring without tripping; ideal for mineral exploration and tunnel foresight drilling.
4.Reliable Performance: Optimized latch & seal design for stable positioning in horizontal boreholes.
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