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A DRILLING RIG WITH A TOP DRIVE SYSTEM OPERABLE IN A WELLBORE DRILLING MODE, TRIPPING MODE, AND BYPASSING MODE
A DRILLING RIG WITH A TOP DRIVE SYSTEM OPERABLE IN A WELLBORE DRILLING MODE, TRIPPING MODE, AND BYPASSING MODE
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机译:具有顶部驱动系统的钻井平台,该钻井平台可在井眼钻井模式,抽油模式和旁路模式下运行
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摘要
A drill rig includes 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. The top drive system includes a traveling carriage that is vertically mobile along vertical rails of the drilling tower by means of a vertical motion drive. The system also includes a top drive unit supported by the carriage and including a top drive motor and a rotary torque output member. The system further includes a tripping operation elevator adapted to be engaged 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 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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