Four-Wing Arc-Corner PDC Drag Bit for Soft to Medium Hard Fractured Formations
The four-wing arc-corner PDC drag bit is specifically designed for soft to medium hard fractured formations. Featuring arc-corner blade structure and premium PDC cutters, it effectively reduces impact-induced cutter breakage risks, delivers stable performance in fractured, backfill, and weathered formations, enables efficient drilling, and minimizes sticking and hole deviation issues. Suitable for various engineering drilling requirements.
Extensively 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 buffers impact loads from fractured formations, significantly reducing PDC cutter breakage and blade fracture risks. Provides better adaptability in backfill, weathered rock, and other complex formations.
Stable Hole Formation with Four-Wing Symmetry
Cross-symmetrical four-wing structure minimizes radial vibration during drilling, providing excellent hole verticality and wall stability. Effectively reduces hole deviation, meeting engineering requirements for anchor cables and support applications.
Smooth Cuttings Removal & Anti-Sticking
Optimized blade spacing and hydraulic channel design, combined with arc-corner structure, ensures smoother cuttings removal, reduces accumulation and blockage, minimizes bit balling and sticking risks, and ensures continuous drilling efficiency.
Wear-Resistant & Extended Service Life
Premium PDC cutters combined with arc-corner protective structure ensure more even force distribution on blades and lower wear rate. Maintains longer service life even in fractured formations with lower 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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