Four-Wing PDC Drag Bit for Soft to Medium Hard Formations with Interlayers
The four-wing PDC drag bit is specifically designed for high-precision rotary drilling in soft to medium hard formations (F<8) with occasional soft-hard interlayers. Featuring a cross-symmetrical four-wing structure and premium PDC cutters, it delivers exceptional hole verticality, stable operation, and extended footage, significantly reducing downtime for bit changes.
Widely used in applications requiring high-quality boreholes such as anchor holes, grouting holes, slope reinforcement, foundation support projects, gas drainage holes, water wells, and shallow geothermal drilling.
Core Advantages
High Hole Accuracy
Cross-symmetrical four-wing cutting structure minimizes radial vibration during drilling, providing superior hole verticality and roundness. Perfect for anchor and grouting applications with strict hole quality requirements.
Stable & Impact-Resistant Operation
Four-wing design evenly distributes cutting loads, providing better adaptability to slight formation interlayers, effectively reducing blade wobble and fracture risks. Ensures stable operation in complex conditions.
Wear-Resistant & Long Service Life
Premium PDC cutters combined with optimized cutter layout reduce wear rate per wing and ensure balanced force distribution. Under similar conditions, offers longer footage than three-wing bits with extended service life.
Wide Compatibility & Customizable
Covers over 10 standard sizes with fully customizable thread types, cutter density, and bit parameters. Tailored solutions for different drilling rigs and specific project requirements.
Applications
Suitable Formations
Red sandstone, mudstone, coal seam, shale, limestone, marble, and other soft to medium hard formations.
Suitable for composite formations with occasional soft-hard interlayers. Not recommended for extremely hard formations like granite or basalt.
Drilling Method
Rotary Drilling – Recommended to use with mud circulation or water circulation for efficient cooling and cuttings removal, further extending bit life.
Product Specifications
Standard Bit Diameter (mm)
- 75 / 91 / 113 / 133
- 153 / 171 / 200 / 220
- 245 / 275 / 300 / 325
- Custom diameters available upon request
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 based on specific formation conditions to optimize drilling performance.
Our Manufacturing Excellence
From precision machining to final assembly — every drill bit is crafted in our ISO 9001 certified facility.
Explore Our Full Range of Drilling Tools
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