Introduction:
Steel tooth tricone bit: it is suitable for very soft formation with high drilling efficiency and excellent diameter protection ability.According to different formation hardness and drill ability, the steel tooth bit can machine different height and width teeth on the the outer line of the cone, and weld a layer of WC wear-resistant material on the surface of the teeth to enhance wear resistance.
Bit Size | 17 1/2''(444.5mm) |
IADC Code | 127 |
Series | HR |
Tooth type | TCI/tungsten carbide insert |
Connection | 7 5/8 API REG PIN |
Bearing | rubber sealed bearing |
Nozzle | three jet nozzles |
Rotary Speed(rpm) | 150~70 |
Weight on Bit(KN/MM) | 0.35~0.9 |
Application | water well,oil well,HDD,exploration,etc |
Formation | Soft formations with low compressive strength and high drillability,such as mudstone,gypsum,salt,soft shale ,soft limestone,etc. |
Bearing Structure
High precision journal bearing,hard faced bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated,made the rotating more stability, safety and durability.
Gauge Structure
Enhanced gauge protection with hardfacing on the shirttail, streng thened leg with special insert tungsten carbide.
Cutting Structure
Steel tooth structure effectively improving the wearing resistance of the teeth and greatly increasing the rate of penetration.
Seal and Lubrication
Patented uniquemetal seal can enhance the seal performance,it has longer durability than the rubber seal .The compensationbearinggrease system greatly increase the lubricating reliabilityand improve the bearing life effectively.
Application:
Soft formations with low compressive strength,such as shale/clay/ sand stone/soft limestone/halite/anhydrite.etc.