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DRILLING RIG WITH TOP DRIVE SYSTEM FUNCTIONING IN WELL DRILLING MODE, LIFTING MODE AND BYPASSING MODE
DRILLING RIG WITH TOP DRIVE SYSTEM FUNCTIONING IN WELL DRILLING MODE, LIFTING MODE AND BYPASSING MODE
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机译：钻机，顶部驱动系统在钻井模式下运行，提升模式和旁路模式
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摘要
The invention relates to a drill rig comprising a drilling tower, a drill floor with a well center, a slip device arranged at the well center, a tubulars connection makeup and breaking device, and a top drive system (100). The top drive system comprises a traveling carriage (110) that is vertically mobile along vertical rails of the drilling tower by means of a vertical motion drive. The system also comprises a top drive unit (120) supported by the carriage and comprising a top drive motor (125) and a rotary torque output member (126). The system further comprises a tripping operation elevator (150) adapted to be engagead with the drill string in order to perform tripping operations. The top drive unit and the tripping operation elevator are each mobile relative to the traveling carriage, and the top drive system is provided with actuators (140, 142) adapted to cause the relative motion of the top drive unit and of the tripping operation elevator so as to provide a drilling mode, a tripping mode and bypassing mode.
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