Bit Size |
IADC Code |
API Connection |
RECOMMENDED PARAMETERS |
||
in |
mm |
Rotary Speed (rpm) |
Weight On Bit(KN) |
||
8 -1/2” |
215.9 |
437 |
4-1/2’’API REG |
240~70 |
0.35~0.9 |
9 -1/2” |
241.3 |
437 |
4-1/2’’API REG |
240~70 |
0.35~0.9 |
12-1/4” |
311.1 |
437 |
6-5/8’’API REG |
240~70 |
0.35~0.9 |