Directional Bent sub is a special deflecting joint of down-hole drilling motor.
Under the action of down-hole drilling motor,it gives bit continuous lateral force and continually makes bit cut borehole wall to drill into curved well bore path .It is divided into two kinds of fixed angle bent sub and variable bent sub.
Under the action of down-hole drilling motor,it gives bit continuous lateral force and continually makes bit cut borehole wall to drill into curved well bore path .It is divided into two kinds of fixed angle bent sub and variable bent sub.
| Type |
O.D. (mm) |
Bent Angle |
I.D.of Orienting Sleeve(mm) |
Connection |
| DWT89 | 89 | 0.5~3.5 | 36 | NC26 |
| DWT140 | 140 | 0.5~3.5 | 36 | NC38 |
| DWT159 | 159 | 50 | NC50 | |
| DWT178 | 178 | 0.5~3.5 | 50 | NC50 |
| DWT203 | 203 | 50 | 6 5/8REG |