Hole opener 16'' ÷ 32” BM3GVX
- Type: 435
- Diameter: 6'' ÷ 32”
- Bearing type: roller, sealed
- Cutting structure: very soft tungsten carbide inserts
- Legback protection: hirttail hardfacing and tungsten carbide inserts
- Thread size and type:
Up: pin 7-5/8 Reg
Down: box 7-5/8 Reg Total length ~1910 mm
Cutting structure with very long widely spaced, chisel-shaped inserts and cone axis offset against center line of the tool ensure very high penetration rate. Designed for drilling in long intervals of very soft poorly compacted shales, sandstones, clays, salts and soft limestones.
