Drill bit pressure selection sheet
Bit type
|
Surface set core bit |
Increase the pressure |
Impregnated core bit |
Decrease the pressure |
|
Bit parameters
|
Large diameter, thick wall, soft matrix |
Increase the pressure |
Small diameter, thin wall, hard matrix |
Decrease the pressure |
|
Rock properties
|
Hard and complete |
Increase the pressure |
Soft and broken
|
Decrease the pressure |
|
Diamond
|
Good quality, big quantity, big size |
Increase the pressure |
Poor quality, small quantity, small size |
Decrease the pressure |
|
Cut area of rock |
Big cut area
|
Increase the pressure |
Small cut area
|
Decrease the pressure |
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