一种液压驱动顶驱下套管装置的研制与应用

Development and application of a hydraulically driven casing device with top drive

随着顶驱技术的发展和广泛应用,我公司研制了一种液压驱动的顶驱下套管装置,该装置顶端与顶驱主轴连接,通过驱动油缸驱动楔形卡瓦卡紧套管,结合顶驱的旋转和起下功能,完成下套管作业。下套管装置设计有芯轴密封结构,该结构能够与套管内孔形成密封,可在下套管同时进行泥浆循环,减少了下套管作业时井内事故的发生。该装置目前已完成42口井下套管作业,作业成功率100%,下套管装置应用降低了工人劳动强度、提升了下套管作业效率和下套管作业成功率。

With the development and wide application of top drive technology, our company has developed a hydraulically driven casing device with top drive. The top of the device is connected with the top drive spindle, and the wedge slip is driven by the driving hydraulic cylinder to clamp the casing tightly. Combined with the rotation and pulling function of top drive, casing down operation is completed. The casing device is designed with a mandrel seal that seals the casing hole and allows mud circulation while running the casing, reducing the risk of well accidents during casing down operations. The tool has been used to complete 29 well casing operations with a 100% success rate. The application of the casing unit has reduced labor intensity and increased the efficiency and success rate of casing operations.