Product Specification | |
Type specification(inch): | 12 1/4 |
Type specification(mm): | 311.1mm |
IADC: | 637 |
Additional features: | G |
Formation: | High pressure resistance,medium hard formation with hard and thick interlayer. |
Drilling condition: | rotary drilling、high temp.drilling、deep drilling、motor drilling |
Bearing Type: | journal bearing |
Total teeth count: | 260 |
Gage row teeth count: | 75 |
Number of gage rows: | 3 |
Number of inner rows: | 14 |
Journal angle: | 36° |
Offset: | 6.5 |
API connection(REG pin): | 6 5/8 |
Weight on bit(KN): | 156-373 |
Rotary speed(Rpm): | 220-40 |
Recommened upper torqueKN.M: | 37.93-43.3 |