Product Specification | |
Type specification(inch): | 8 1/2 |
Type specification(mm): | 215.9mm |
IADC: | 517 |
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: | 124 |
Gage row teeth count: | 44 |
Number of gage rows: | 3 |
Number of inner rows: | 9 |
Journal angle: | 33° |
Offset: | 5 |
API connection(REG pin): | 4 1/2 |
Weight on bit(KN): | 76-222 |
Rotary speed(Rpm): | 300-60 |
Recommened upper torqueKN.M: | 16.3-21.7 |