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| Bearing Type: | Sealed Journal Bearing With Gauge Protection | Cutting Material: | Tungsten Carbide Insert |
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| Standard: | API-7-1, ISO 9001:2008 | Series: | FA |
| IADC: | 617G | Supplementary Features: | G : Reinforced Gauge Protection |
| Cooling Type: | Fluid Circulation ( Water Or Mud ) | Drill Rig: | With Pump ( Such As Mud Pump ) |
| High Light: | Tungsten Carbide Drill Bits,Gas Industry Carbide Rock Drill Bits,Oil Industry Tricone Rock Bit |
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Tricone Bit , Gas Well Drilling Bit , Medium Hard Formation , Rock Bit , Jetted Bit
RECOMMENDED DRILLING PARAMETERS FOR APPLICATION
| Types & IADC Code | 417 |
437 447 |
517 527 |
517 527 |
537 547 |
617 627 |
637
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| WOB | KN/mm(Bit Dia.) | 0.4~0.9 | 0.4~0.9 | 0.35~1.0 | 0.35~1.0 | 0.5~1.0 | 0.6~1.1 | 0.7~1.2 |
| Lb/in. (Bit Dia.) | 2285~5142 | 2285~5142 | 2000~5714 | 2000~5714 | 2857~5714 | 3428~6285 | 4000~6857 | |
| Rotation Speed (Rpm) | 140~60 | 240~70 | 125~50 | ~60 | 110~50 | 100~40 | 80~4 | |
ROLLER CONE BIT CUTTING STRUCTURE
Tungsten carbide hardfacing is applied to the teeth of soft formation bits to increase resistance to the scraping and gouging action. Hard formation bits have little or no hardfacing on the teeth, but hardfacing is applied to the outer surface (gauge) of the bit. If the outer edge of the cutting structure is not protected by tungsten carbide hardfacing two problems may occur.
1. The outer surface of the bit will be eroded by the abrasive formation so that the hole diameter will decrease. This undergauge section of the hole will have to be reamed out by the next bit, thus wasting valuable drilling time
2. If the gauge area is worn away it causes a redistribution of thrust forces throughout the bearing assembly, leading to possible bit failure and leaving junk in the hole (e.g. lost cones)
Contact Person: Jade
Tel: 0086-10-63405086
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