GHJ Series Tri-cone Rock Bits With Metal-sealing Bearing System
Main features:
This series adopts non-isometry teeth placement in combination with optimized teeth height and shape.
Applying the world’s latest sealing technology - metal face sealing ensures the bearing sealing is more efficient, and more suitable for drilling at high rotary speed and high tem-perature working condition.
New material is applied on the part of gage protecting, and reducing the friction from oil-well-wall, improving quality of well wall, protecting the back of leg and seal.
Bit’s bear is enhanced treatment, and prolonging the bit working life, reducing the drilling cost.
The main technical performance and specification:
Type | IADC | Bit Size | Std.API pin Shank Size(inches) | Approximate weight of bits(kg) | |
inches | mm | ||||
81/2GHJ437T | 437 | 81/2 | 215.9 | 4 1/2 REG | 42 |
81/2GHJ447T | 447 | 81/2 | 215.9 | 4 1/2 REG | 42 |
81/2GHJ517T | 517 | 81/2 | 215.9 | 4 1/2 REG | 42 |
81/2GHJT437G | 437 | 81/2 | 215.9 | 4 1/2 REG | 42 |
81/2GHJT517G | 517 | 81/2 | 215.9 | 4 1/2 REG | 42 |
81/2GHJ517GK | 517 | 81/2 | 215.9 | 4 1/2 REG | 42 |
91/2GHJ437T | 437 | 91/2 | 241.3 | 6 5/8 REG | 60 |
91/2GHJ447T | 447 | 91/2 | 241.3 | 6 5/8 REG | 60 |
91/2GHJ517T | 517 | 91/2 | 241.3 | 6 5/8 REG | 60 |
91/2GHJT437G | 437 | 91/2 | 241.3 | 6 5/8 REG | 60 |
91/2GHJT517G | 517 | 91/2 | 241.3 | 6 5/8 REG | 60 |
121/4GHJ437T | 437 | 121/4 | 311.2 | 6 5/8 REG | 98 |
121/4GHJ517T | 517 | 121/4 | 311.2 | 6 5/8 REG | 98 |
