| 摘要 |
<p>A device that is configured to be a multi modal drilling device. The device is multi modal because in one mode, it is a drill pipe spinner and in another mode, it is a pipe rotary power tong. A user inserts a module to change from the spinning mode to the tong mode. The spinner mode (i.e., the spinning mode) facilitates low torque spinning of drill pipe. The tong mode facilitates high torque rotation of drill tubing and casing. Heretofore, there has never existed a machine capable of both modes. In some implementations, the device includes a floating rotor with cam ramps that increase a hoop pressure on a pipe element within the rotor as torque is increased. Accordingly, a self-energized gripping system is provided.</p> |
