6 1/2 inch Tricone Rock Bit – IADC 121
Kısa Tanıtım165.1 mm IADC 121 tricone rock bit with a 3 1/2 API REG connection.
Rock Bits
165.1 mm IADC 121 tricone rock bit with a 3 1/2 API REG connection.
165.1 mm IADC 121 tricone rock bit with a 3 1/2 API REG connection.
6 1/2 inch Tricone Rock Bit – IADC 121 is a three-cone drilling bit with a nominal diameter of 165.1 mm and a 3 1/2 API REG connection. The IADC 121 class identifies a Milled steel tooth cutting structure and Open roller bearing arrangement for very soft and soft formations.
The reference operating range is 40–300 RPM with 40–130 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.
| Product type | Three-cone tricone rock bit |
|---|---|
| Nominal diameter | 6 1/2 inch / 165.1 mm |
| IADC code | 121 |
| Cutting structure | Milled steel tooth |
| Formation class | Very soft and soft formations |
| Bearing arrangement | Open roller bearing |
| Connection | 3 1/2 API REG |
| Reference rotary speed | 40–300 RPM |
| Recommended WOB | 40–130 kN |
| Circulation / nozzles | Central / 1 |
| Reference make-up torque | 9.5–12 kN·m |
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Tricone sondaj matkabı; su kuyusu, maden ve jeotermal sondaj uygulamalarında farklı kaya formasyonlarının delinmesi için kullanılan üç konili döner bir rock bit çeşididir.
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