Tungsten Carbide Body PDC Bit

PDC Ribbed Reaming Core Drill Bit

108 to 133mm PDC Ribbed Reaming Core Drill Bit
  • Suitable Formations: Clay, silt, mudstone, shale, sandstone and weathered rock formations with soft to medium hardness.

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Product Introduction

This 108mm to 133mm PDC ribbed reaming core bit integrates hole reaming and core sampling into one drilling process. Equipped with reinforced rib blades and high-strength PDC cutters, it enlarges the pilot hole from 108mm up to 133mm in a single run, finishing core extraction and hole expansion simultaneously to cut down working procedures and boost drilling efficiency greatly.
Key Features

  1. Integrated Step Reaming & Coring Design
    The inner core barrel maintains a 108mm diameter for rock coring, while outer rib structure expands the hole to 133mm. No extra bit replacement is needed, perfectly prepared for casing running after pilot drilling.
  2. Impact-resistant & Wearproof Rib Blades
    Thickened reinforced rib bodies distribute drilling pressure evenly to prevent tooth breakage. Premium PDC diamond composite cutters deliver excellent abrasion resistance and fast penetration rate in soft to medium-hard formations.
  3. Standard Thread Connection
    Male external thread at the bottom fits standard 108mm drill rods and core barrels directly. Easy to assemble and compatible with most geological drill rigs and water well drilling machines.
  4. Large Flushing Channels Anti-clogging
    Wide drainage gaps between ribs allow smooth circulation of drilling fluid to carry cuttings away. It effectively avoids bit balling and hole blockage when drilling in clay, mudstone and sandstone layers.

Application Fields

  • Geological survey & geotechnical engineering core sampling
  • Water well drilling & pre-reaming for casing installation
  • Pile foundation drilling, grouting hole & anchor bolt hole enlargement
  • Shallow mining exploration and coal seam geological coring