Product Specification | |
Type specification(inch): | 12 1/4 |
Type specification(mm): | 311.1mm |
IADC: | 437 |
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: | 92 |
Gage row teeth count: | 41 |
Number of gage rows: | 3 |
Number of inner rows: | 7 |
Journal angle: | 33° |
Offset: | 9.5 |
API connection(REG pin): | 6 5/8 |
Weight on bit(KN): | 109-320 |
Rotary speed(Rpm): | 300-60 |
Recommened upper torqueKN.M: | 37.93-43.3 |