Choosing the correct diamond core drill bit according to rock formation is essential for improving penetration rate, core recovery, and drilling efficiency.
Why Drill Bit Selection Matters
Different geological formations require different diamond core bit designs.
Using an unsuitable drill bit may result in:
- Low penetration rate
- Premature wear
- Bit glazing
- Poor core recovery
- Higher drilling costs
Professional drilling contractors select bits according to rock hardness, abrasiveness, fractures, and drilling conditions.
Hard Rock
Examples:
Recommended:
Impregnated diamond core bits.
Advantages:
- Long service life
- Stable cutting performance
- High wear resistance
Medium Hard Rock
Examples:
- Limestone
- Sandstone
- Shale
Recommended:
Medium matrix diamond core bits.
Advantages:
- Balanced penetration
- Good diamond exposure
- Reliable performance
Highly Abrasive Rock
Examples:
- Quartz-rich formations
- Broken abrasive formations
Recommended:
Wear-resistant matrix designs.
Fractured Formation
Challenges:
- Core loss
- Bit vibration
- Uneven wear
Recommended:
Optimized crown design and proper drilling parameters.
Important Selection Factors
Besides rock type, consider:
- Drilling depth
- Core size
- Rotation speed
- Feed pressure
- Water flow
- Drill rig power
YKDRILL Customized Solutions
YKDRILL provides customized diamond core bit solutions based on customer requirements.
Available sizes:
Applications:
- Gold mining
- Copper exploration
- Lithium exploration
- Geological drilling
