IADC 127 milled tooth water well drilling 6 1 4 inch tricon

Basical Parameter
Bit Size 6 1/4/"(158.7MM)
IADC Code 127
Tooth Type Steel /Milled Tooth
Bearing Type Elastomer Sealed Bearing
Connection 3 1/2"API reg pin
Rotary Speed(rpm) 180~80
Weight on Bit(KN/MM) 0.35~1.00
Formation low compressive strength,high drill-ability and soft formation,like shale,clay,salt rock and soft limestone,etc.