Specifications

Polycrystalline Diamond Compact bits used for the rock 8 levels of above 20 levels of rock layers; have 8-half pieces PDC.

The oil field PDC drill bits connection parameter

Drill bit outer diameter Binding screw specification and type Drill bit bevel edge diameter outer diameter Inner diameter diameterMM tolerance 51/32" 127.79~187.33 31/2"REG 104.38 ±0.4 71/32" 188.12~238.13 41/2"REG 135.33 91/32" 238.92~368.30 65/8"REG 186.93 141/32" 369.07~444.50 75/8"REG 215.11

· Recommendation use well drilling parameter

Drill bit (In) Drill winds Displacement (l/s) Compared to water horsepower (w/mm2) Bit pressure (KN) Rotational speed (r/min) 81/2" 6 25~38 3~8 13~80 60~300 81/2" 5 24~34 3~10 13~80 60~300 81/2" 4 24~34 3~11 13~80 60~300