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大吨位水平定向钻机在钻孔后的回拖扩孔过程中,经常发生钻杆难以拆卸故障,导致工期延误。为此,我们对河北省衡水市金域蓝湾住宅区附近的热力管道铺设工程使用的大吨位水平定向钻机进行施工过程全程跟踪,分析了钻杆难以拆卸的原因,总结出可行的解决方法。附表为该热力管道拖管工程概况。1.原因分析通过对钻机进场、导向钻进、回拖扩孔的施工过程全程跟踪,我们分析钻杆难以拆卸的原因是钻杆连接螺纹异常损坏,而钻杆连接螺纹异常损坏的
Large-tonnage horizontal directional drilling machine in the drag back and reaming process, it is often difficult to disassemble the drill pipe failure, leading to construction delays. To this end, we tracked the construction process of the large-tonnage horizontal directional drilling rig used in the thermal pipeline laying project near the Jinyu Bay Resort in Hengshui City, Hebei Province. The reasons for the difficulty in disassembling the drill pipe were analyzed and feasible solutions were summarized. Schedule for the heat pipe pipe project overview. 1. Analysis of the reasons Through the drilling rig approach, guided drilling, drag back and reaming the entire construction process tracking, we analyze the drill pipe is difficult to disassemble due to abnormal drill pipe connection thread damage, and drill pipe connection thread abnormal damage