Type specification(inch) | 12 1/4 |
Type specification(mm) | 311.2mm |
IADC | 127 |
Additional features | G |
Formation | Soft Formation of Low Crushing Resistance and High Drillability |
Drilling condition | rotary drilling、high temp.drilling、deep drilling、motor drilling |
Bearing Type | journal bearing |
Total teeth count | 84 |
Gage row teeth count | 34 |
Number of gage rows | 3 |
Number of inner rows | 6 |
Journal angle | 33° |
Offset | 9.5 |
API connection(REG pin) | 6 5/8 |
Weight on bit(KN) | 109-311 |
Rotary speed(Rpm) | 300-60 |
Recommened upper torqueKN.M | 37.93-43.3 |