T6 Series Double Tube Core Barrels
General purpose conventional core barrels designed for coring in soft to hard homogenous and slightly broken formations with water, mud, polymer or air flushing. Although designed as double tube core barrels, all can be converted to triple tube by incorporating PVC coreliners. Available in 6 different diameters for metric (millimetre) hole sizes between 101 – 146 mm. Also available is the T6H which produces H size hole.
Advantages:
- Fast penetration compared with thicker wall core barrels (e.g. DCDMA types WF, WG etc)
- A general purpose core barrel suitable for soft to hard rock formations.
- In addition to water and polymer, mud and air can be used for flushing
Technical Data
| Specification | Core Barrel Type | |||||
|---|---|---|---|---|---|---|
| T6-76 | T6-86 | T6-101 | T6-116 | T6-131 | T6-146 | |
| Hole Diameter (mm) | 76.3 | 86.3 | 101.3 | 116.3 | 131.3 | 146.3 |
| Core Diameter (mm) | 57.0 | 67.0 | 79.0 | 93.0 | 108.0 | 123.0 |
| Kerf / Crown Thickness (mm) | 9.5 | 9.5 | 11.0 | 11.5 | 11.5 | 11.5 |
| Cutting Area (cm2) | 20.21 | 23.24 | 31.58 | 38.30 | 43.79 | 49.28 |
| Hole Area (cm2) | 45.73 | 58.49 | 80.60 | 106.2 | 135.4 | 168.1 |
| Cutting Area as % of Hole Area | 44% | 40% | 39% | 36% | 32% | 29% |
| Core Area (cm2) | 25.52 | 35.26 | 49.02 | 67.93 | 91.61 | 118.8 |
| Standard Thread Connection in Head” | CR50 | CR50 | NW | NW | NW | NW |
| Recommended Casing | M86 | M101 | M116 | M131 | M146 | – |
| Conversion to triple tube possible | Yes | Yes | Yes | Yes | Yes | Yes |
*Cross-over sub required for drill rods not matching the thread connection in core barrel head
Key to Main Parts of T6 Core Barrel Assembly
Complete core barrel consists of:
1. Core Barrel Head
2. Inner Tube 1.5m or 3.0m long
3. Outer Tube 1.5m or 3.0m long
4. Extension Tube (T6-116, T6-131 and T6-146 only)
5. Core Lifter
6. Core lifter Case
Core Bit and Reaming Shell are not supplied as part of the core barrel assembly, but must be chosen correctly to match the particular application and rock formation. Please refer to our Core Bits page for further details.
Click on this link for the T6H Core Barrel.
