|
|
钻井参数 |
|
in |
7 7/8 |
|
mm |
200.0mm |
|
REG.PIN.API |
4 1/2 |
|
IADC |
637 |
|
Formation |
Hard formations |
|
Rotary Speed(rpm) |
80-40 |
|
Weight on Bit(KN/MM) |
0.5-1.2 |
|
N.W./G.W.(KG) |
30/32 |