| 摘要 |
Directional drilling device of the variable bent connector type, consisting of a connector rotating between two bent bodies such that, in the diverted drilling position, the two angles add and the drill string does not rotate, the bottom motor driving only the bit and such that, in the straight drilling position, the two angles oppose each other when the drill string rotates, if possible, in the opposite direction to the reactive torque of the motor. <IMAGE>
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