 |
117
1
tianjin ,shanghai
water well,oil well,HDD,exploration,etc
100% New
HENGJI BIT SPECIFICATION | |
Bit Size | 7 7/8'' |
IADC Code | 117 |
Series | HR |
Tooth type | TCI/tungsten carbide insert |
Connection | 4 1/2 API REG PIN |
Bearing | rubber sealed bearing |
Nozzle | three jet nozzles |
Rotary Speed(rpm) | 150~80 |
Weight on Bit(KN/MM) | 0.35~0.8 |
Application | water well,oil well,HDD,exploration,etc |
Formation | Very soft formations with low compressive strength and high drillability,such as clay,mudstone,chalk,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.
Cutting Structure
Steel tooth structure effectively improving the wearing resistance of the teeth and greatly increasing the rate of penetration.
Gauge Structure
Enhanced gauge protection with hardfacing on the shirttail, streng thened leg with special insert tungsten carbide.
HENGJI BIT SPECIFICATION | |
Bit Size | 7 7/8'' |
IADC Code | 117 |
Series | HR |
Tooth type | TCI/tungsten carbide insert |
Connection | 4 1/2 API REG PIN |
Bearing | rubber sealed bearing |
Nozzle | three jet nozzles |
Rotary Speed(rpm) | 150~80 |
Weight on Bit(KN/MM) | 0.35~0.8 |
Application | water well,oil well,HDD,exploration,etc |
Formation | Very soft formations with low compressive strength and high drillability,such as clay,mudstone,chalk,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.
Cutting Structure
Steel tooth structure effectively improving the wearing resistance of the teeth and greatly increasing the rate of penetration.
Gauge Structure
Enhanced gauge protection with hardfacing on the shirttail, streng thened leg with special insert tungsten carbide.
