采用绳索取芯钻进技术进行超深孔钻进时,受泥浆性能、高速钻杆产生的离心力以及钻探设备性能等因素的影响,钻杆内壁会产生集结“泥垢”现象,从而阻碍钻探工序正常实施,降低钻进效率、增加钻探成本。本文以ZK28孔为例,主要介绍QC小组活动开展情况,如:目标设定、要因确认、对策制定及实施等。QC小组对深孔钻探过程中钻杆内壁“泥垢”问题的成功解决经验,可供今后类似工程参考。 When using rope coring drilling technology to drill ultra-deep holes, due to the mud performance, centrifugal force generated by high-speed drill pipe and drilling equipment performance and other factors, the inner wall of drill pipe will produce “mud” phenomenon, which hinders drilling The normal operation of the process to reduce drilling efficiency and increase drilling costs. In this paper, ZK28 hole, for example, mainly introduces QC group activities carried out, such as: target setting, the cause of confirmation, the formulation and implementation of countermeasures. The QC team succeeded in solving the problem of the inner wall of the drill pipe during deep hole drilling and could be used as a reference for similar projects in the future.