BTW Wire-line Core Barrel Assembly Specifications Wire-line core barrels was consisted of outer tube assembly, inner tube assembly and overshout assembly. Size: BTW NTW HTW Wireline drill tools can lift drill core from drill rods without picking up bits. All the tools include principal parts of...
BTW Wire-line Core Barrel Assembly Specifications
Wire-line core barrels was consisted of outer tube assembly, inner tube assembly and overshout assembly.
Size: BTW NTW HTW
Wireline drill tools can lift drill core from drill rods without picking up bits. All the tools include principal parts of the drill tools, overshot assembly, drill rods. holding dog, circle wrench and etc, their advantages are higher penetration, higher core recovery ratio. longer bit life and lower our ab intensity, and the advantages get more clear with the increasing of hole depth.
![]() core barrel BTW NTW HTW | ![]() wire line core barrel |
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