6 3/4 inch Tricone Rock Bit – IADC 211
Kısa Tanıtım171.4 mm IADC 211 tricone rock bit with a 3 1/2 API REG connection.
Rock Bits
6 3/4 inch Tricone Rock Bit – IADC 211
171.4 mm IADC 211 tricone rock bit with a 3 1/2 API REG connection.
ÜRÜN AÇIKLAMASI
6 3/4 inch Tricone Rock Bit – IADC 211 is a three-cone drilling bit with a nominal diameter of 171.4 mm and a 3 1/2 API REG connection. The IADC 211 class identifies a Milled steel tooth cutting structure and Open roller bearing arrangement for soft to medium-hard formations.
The reference operating range is 40–600 RPM with 60–150 kN recommended weight on bit. Poor bottom-hole cleaning causes cuttings to be reground, raises heat and shortens cutter life. Final operating values must be checked against the formation, rig capacity and circulation conditions on site.
TECHNICAL SPECIFICATIONS
| Product type | Three-cone tricone rock bit |
|---|---|
| Nominal diameter | 6 3/4 inch / 171.4 mm |
| IADC code | 211 |
| Cutting structure | Milled steel tooth |
| Formation class | Soft to medium-hard formations |
| Bearing arrangement | Open roller bearing |
| Connection | 3 1/2 API REG |
| Reference rotary speed | 40–600 RPM |
| Recommended WOB | 60–150 kN |
| Circulation / nozzles | Central / 1 |
| Reference make-up torque | 9.5–12 kN·m |
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