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提升钻具时,钻杆立根内外附有很多泥浆,泥浆粘度越大附的越多。它不仅影响孔口和机器的卫生,而且妨碍钻具的拧卸
When lifting the drilling tool, the drill pipe stand with a lot of mud inside and outside, the greater the viscosity of the mud attached to the more. It not only affects the orifice and the machine’s hygiene, but also impedes the screwing and unloading of the drill