Tri-Wing PDC Drag Bit for Soft to Medium Hard Formations
This tri-wing PDC drag bit is specifically engineered for efficient rotary drilling in soft to medium hard formations (rock strength coefficient F＜8). Featuring streamlined three-wing design and premium PDC cutters, it delivers high penetration rates, stable performance, and significantly reduces cost per meter drilled.
Widely used in grouting holes, gas drainage boreholes, slope reinforcement, anchoring projects, water well drilling, and geothermal drilling operations.
Core Advantages
High Drilling Efficiency
Optimized three-wing cutting structure enables efficient shear rock breaking, significantly increasing penetration rates in soft formations. Premium PDC cutters ensure fast drilling in red sandstone, mudstone, and other soft to medium hard formations.
Excellent Cuttings Removal
Large junk slots combined with optimized hydraulic design ensure smooth cuttings evacuation, effectively preventing bit balling. Maintains clean operation during continuous drilling, reducing re-grinding and improving pure drilling time.
Stable & Durable Performance
Premium PDC cutters with high impact resistance and even wear distribution extend bit life significantly. Three-wing balanced design minimizes uneven wear, ensuring stable long-term performance in soft to medium hard formations.
Wide Compatibility & Customization
Available in 10+ standard specifications with fully customizable thread types and bit parameters. Suitable for various applications including grouting holes, anchor holes, and water well drilling, compatible with different rigs and working conditions.
Streamlined Three-Wing Design
Optimized three-wing streamlined structure reduces drilling resistance and improves ROP. Balanced three-wing configuration ensures smooth operation with minimal vibration, ideal for fast and efficient drilling in soft to medium hard formations.
Applications
Suitable Formations
Red sandstone, mudstone, coal seams, shale, limestone, marble, and other soft to medium hard formations (rock strength coefficient F＜8)
Typical Applications: Red sandstone, mudstone, coal seams, shale, limestone and other soft to medium hard formations.
Not recommended for hard intact formations such as granite, basalt, and highly abrasive formations.
Drilling Method
Rotary Drilling – Recommended operation with mud circulation or water circulation for efficient cooling and cuttings removal.
Optimal drilling efficiency in soft to medium hard formations is achieved with proper weight on bit and rotation speed combination. Maintaining good circulation helps extend bit life and improve penetration rates.
Product Specifications
Standard Bit Diameter (mm)
Non-standard diameters available upon request
Thread Connection Options
REG Thread
NC Thread
Other types: Z-50 thread, custom thread connections
Customization Services
If your drill pipe thread is not listed above, simply provide thread parameters or drawings for a fully customized connection solution. We can also adjust PDC cutter specifications, quantity, and blade structure based on specific formation conditions and drilling requirements to optimize bit performance.
Our Manufacturing Excellence
From precision machining to final assembly — every drill bit is crafted in our ISO 9001 certified facility.
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