PDC Core Drill Bit

89/110mm PDC Coring Bit

The 89/110mm PDC Coring Bit is designed for core drilling and reaming applications. It connects to an 89mm core barrel and has an outer diameter of 110mm , making it suitable for coring with subsequent hole enlargement. Equipped with 1305 button-type PDC cutters , this bit offers a good balance of cutting efficiency, impact resistance, and wear resistance in soft to medium-hard formations. Compared with conventional coring bits, it features optimized waterway design for better cuttings removal, faster penetration, and reliable performance in continuous drilling.

Key Features

  • 1305 button-type PDC cutters : High cutting efficiency and excellent wear resistance, suitable for loess, clay, mudstone, muddy sandstone, red sandstone, siltstone, and strongly weathered formations.

  • Enlarged waterways : Smooth water flow, reduced blockage risk, better cuttings removal, and faster penetration.

  • Fits 89mm core barrel, 110mm outer diameter : Ideal for coring and reaming operations with stable connection and strong compatibility.

  • Fast cuttings removal, no water blockage : Helps reduce bit balling and blockage in mudstone and muddy sandstone, improving continuous drilling performance.

  • Durable and long-lasting : Optimized cutter layout extends service life, suitable for geological survey, construction survey, water wells, mining, and other projects.

  • Fast penetration rate : Optimized cutting structure and waterway design deliver higher ROP in suitable formations.

Applicable Formations

Loess, clay, mudstone, muddy sandstone, red sandstone, siltstone, strongly weathered rock, etc.

Applications

Geological exploration, rock coring, housing survey, engineering survey, geological drilling, mining exploration, water well drilling, foundation reaming, and more.

Recommended Use

Use with an 89mm core barrel . Adjust WOB and pump rate according to formation conditions. In clay and mudstone formations, maintain sufficient water flow to take full advantage of the enlarged waterways. For reaming, match rotary speed and feed rate to your drilling rig and hole diameter requirements.