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Three Wing PDC Drag Bit for Grouting Gas Drainage Water Well Drilling

Standard Diameter (mm)

75, 91, 113, 133, 153, 171, 200, 220, 245, 275, 300, 325

Custom diameters available upon request

Standard Thread Types

  • REG Series: 2 3/8 REG, 3 1/2 REG
  • NC Series: NC26, NC31, NC38

Custom threads available upon request

Primary Applications

  • Coal mine gas drainage holes
  • Grouting holes
  • Slope reinforcement and anchor holes
  • Water wells, hydrogeological and shallow geothermal drilling
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Three Wing PDC Drag Bit | Soft to Hard Formations

Three Wing PDC Drag Bit (For Soft to Hard Formations)

Professional Drilling Solution for Enhanced Productivity
Ultra-Fast Penetration Smooth Cuttings Removal Durable & Reliable Wide Compatibility

Core Advantages

Ultra-Fast Penetration Rate

Optimized for soft to hard formations, delivering high drilling efficiency and significantly reducing operation time.

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Excellent Cuttings Removal

Three-wing drag blade structure ensures smooth cuttings evacuation, preventing bit balling and cuttings regrinding.

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Durable & Reliable Performance

High-quality PDC diamond cutters provide excellent impact resistance, uniform wear, and extended service life.

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Wide Compatibility & Customization

10+ standard sizes available, compatible with mainstream thread types, fully customizable upon request.

Product Overview

The Three Wing PDC Drag Bit is a high-efficiency rotary drilling bit specifically designed for soft to hard rock formations. By combining a streamlined three-wing blade structure with highly wear-resistant PDC diamond cutters, this bit achieves an ideal balance between penetration speed, drilling stability, and cost-effectiveness.

It performs exceptionally well in complex formations such as red sandstone, mudstone, coal seams, shale, slate, marble, and backfill layers, making it widely used in coal mine safety, infrastructure construction, water well drilling, and geothermal projects.

Design & Performance Features

High-Efficiency Rock Cutting

Three-wing streamlined blade layout with densely arranged PDC cutters enables shear-type rock breaking, significantly outperforming traditional drag bits in soft formations.

Smooth Cuttings Removal

Large junk slots and optimized hydraulic design ensure cuttings are rapidly removed from the borehole, keeping the bottom clean and preventing bit clogging.

Excellent Directional Control

Reinforced bit body and gauge protection provide superior guidance during spudding and drilling, helping maintain verticality and reduce hole deviation risk.

Wide Formation Adaptability

Designed for formations with Protodyakonov hardness coefficient F1-F<8, ideal for coal seams, mudstone, shale, sandstone, limestone, and other soft to hard formations.

Technical Specifications

Recommended Applications

Grouting holes Gas drainage & extraction holes Slope stabilization & anchor holes Water wells & hydrogeological drilling Shallow geothermal drilling Casing advancement / spudding

Suitable Formations

Red sandstone, mudstone, coal seams, backfill layers, limestone, shale, marble, and similar soft to hard formations (F<8).

Drilling Method

Rotary drilling (Mud circulation or water circulation is recommended for effective cuttings removal).

Product Sizes & Thread Options

Standard Bit Sizes (mm)

75 91 113 133 153 171 200 220 245 275 300 325

Custom sizes available upon request.

Available Thread Types

Thread Series
Specific Models
REG Series
2 3/8 REG, 2 7/8 REG, 3 1/2 REG, 4 1/2 REG
NC Series
NC23, NC26, NC31, NC38
Others
Z-50 and custom thread connections

Customization Service

If your drill rod thread is not listed, simply provide the thread specification or drawing. We offer fully customized connection solutions.

Our Manufacturing Excellence

From precision machining to final assembly — every drill bit is crafted in our ISO 9001 certified facility.

Request a Quote & Contact Us

For quotes, technical specifications, or after-sales support, contact us. We respond within 24 hours on business days.

Three Wing PDC Drag Bit for Soft to Hard Formations

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