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17 1\2 (444.5mm) tricone bit IADC code 447
Packaging & Delivery
Specifications17 1/2 Tricone Bit IADC 447
1. Combined circulation
2. Sealed bearings
3. Gauge protection
17 1/2 (444.5mm) tricone bit IADC code 447
1. Bearing type: Rubber sealed journal bearing
2. Quantity of nozzles: 3-4 pcs
3. Pin size: API 7 5/8REG
4. Bit weight net: 230kg
5. Bit weight gross: 250kg
6. Rotation speed: 150-60r/ min
7. WOB: 0.4-0.7kN/ mm
Bit is designed for drilling of oil and gas wells in very soft formations such as clay, shale, chalk, gypsum, rock salt, soft shale, and soft limestone.
1. Combined circulation (Three side jets and one central jet) .
2. Shirttail and leg entering edge hardfacing.
3. Shirttail protection with TCI.
4. Enhanced teeth hardfacing.
5. Inserts on gage surface.
6. Additional gage row.