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顶部驱动钻井系统(图1)是一种将管子上卸装置和旋转钻柱的设备相结合,从井架空间上部直接旋转钻柱并沿导轨向下送进,取代了转盘和方钻杆的钻井系统。 这种系统能节省钻井时间达25％,受到了石油界的瞩目。据统计,1983年有13台,1985年有70台海上及陆上钻机装备了这种系统。
Top Drive Drilling System (Figure 1) is a combination of pipe handling and rotating drill string equipment, direct rotation from the top of derrick drill string and feed down along the track, replacing the turntable and kelly drilling system. This system can save drilling time up to 25%, by the oil industry’s attention. According to statistics, there were 13 units in 1983 and more than 70 offshore and onshore rigs were equipped in 1985.