Three-Wing Arc-Corner PDC Drag Bit for Soft to Medium Hard Fractured Formations
The three-wing arc-corner PDC drag bit is specifically designed for soft to medium hard fractured formations. Featuring an arc-corner blade structure and premium PDC cutters, the three-wing layout balances efficient rock breaking with impact resistance. It enables fast and stable drilling in backfill, weathered rock, and other fractured formations, effectively reducing cutter breakage, sticking, and hole deviation issues. Suitable for various rapid hole completion projects.
Widely used in grouting holes, gas emission holes, slope reinforcement, support engineering, anchor cable holes, water wells, geothermal drilling, and other applications.
Core Advantages
Strong Impact Resistance with Arc-Corner Blades
Unique arc-corner blade design effectively buffers impact loads from fractured formations, significantly reducing PDC cutter breakage and blade fracture risks. Provides better adaptability and more stable operation in backfill, weathered rock, and other complex fractured formations.
High-Speed Rock Breaking with Three-Wing Design
Three-wing structure concentrates cutting load on each wing, providing stronger rock shearing force. Delivers optimal drilling speed in soft to medium hard fractured formations, ideal for rapid hole completion projects such as grouting holes and gas emission holes, improving construction efficiency.
Wide Cuttings Grooves for Smooth Removal
Wider spacing between three wings, combined with optimized hydraulic channels and arc-corner structure, provides more unobstructed cuttings removal paths, reduces accumulation and blockage, significantly minimizes bit balling and sticking risks, and ensures continuous efficient drilling.
Lightweight & Flexible for Wide Adaptability
Lighter overall weight adapts to low-torque drilling rigs, making shallow hole construction and mobile operations more convenient. Maintains hole stability while meeting multi-scenario construction needs such as slope support and anchor cable holes.
Wear-Resistant & Cost-Effective
Premium PDC cutters combined with arc-corner protective structure ensure even force distribution on blades and lower wear rate. Maintains longer service life in fractured formations with more competitive cost per meter drilled.
Applications
Suitable Formations
Red sandstone, mudstone, coal seam, backfill soil, weathered rock, and medium hard fractured formations.
Not recommended for hard intact formations such as granite or basalt.
Drilling Method
Rotary Drilling – Recommended to use with mud circulation or water circulation for efficient bit cooling and cuttings removal, improving drilling stability and extending bit life.
Product Specifications
Standard Bit Diameter (mm)
- 75 / 94 / 113
- 133 / 153 / 171
- Custom diameters available
Thread Types
- REG: 2 3/8, 2 7/8, 3 1/2, 4 1/2
- NC: NC23, NC26, NC31, NC38
- Other: Z-50, Custom Threads
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 cutter density and arc-corner structure based on formation fracture degree to optimize impact resistance and rock breaking 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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