钻杆柱是钻探工作中从地表把钻机的动作和动力传递给井底的钻头的一个关键组件和重要环节。钻头在井底破碎岩石、连续给进以及其他一切工作全取决于钻杆柱的工作性能。
虽然钻杆柱在结构上看似较为简单，但实际上，它承受着相当复杂的外力。
Although the structure of drill string seems simple, it bears rather complicated outside force.
该定向钻探系统包括一根构成能连续地和精确地在地面上钻孔并且无需周期地断开其连接的钻杆柱。
The guided drilling system includes a drill string configured to continuously and accurately bore a hole in the ground without the need to periodically break the connection of the drill string.
方钻杆之后带动整个钻柱进行旋转，由于方钻杆是与钻柱的顶部用丝扣连接在一起的。
The kelly then turns the entire drillstring because it is screwed into the top of the drillstring itself.
应用推荐