LARGE-DIAMETER DRILL BITS
Large-Diameter Bit Series
Large-diameter drill bits are configured around target diameter, depth, formation, rig capacity, connection, cutter profile, and flushing requirements.
PRODUCT OVERVIEW
Large-Diameter Bit, Shown from Every Critical Angle
A dominant product view, four close-up images, and concise engineering context—organized as one focused product story.
ENGINEERED TO THE DRILLING TASK
Diameter is only the starting point.
Each bit is configured around target hole size, formation, rig capacity, cutter arrangement, connection and flushing conditions.
PRODUCT PARAMETERS
Standard Sizes, Project-Specific Working Parameters
Six standard bit diameters anchor the range. Blade count, water-hole quantity, weight on bit and rotational speed are finalized for the formation and equipment.
| Bit Size (mm) | No. of Blades | No. of Water Holes | Weight on Bit (kN) | Rotational Speed (r/min) |
|---|---|---|---|---|
| 153 | 4/5/6 | 4–6 | 10–70 | 60–500 |
| 171 | 5 | 5 | 10–70 | 60–500 |
| 190 | 4 | 4 | 10–70 | 60–500 |
| 216 | 4/5/6/8 | 4–8 | 30–110 | 50–250 |
| 222 | 5 | 5 | 30–110 | 50–250 |
| 311 | 5 | 6–8 | 30–110 | 50–250 |
Blade count, water-hole quantity, weight on bit and rotational speed are specified for the target formation, rig and circulation plan.
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