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铁砂钻进中岩心堵塞是常有的现象,比较完整的岩层一个回次干的好,可以钻进2-3小时,进尺达1-2公尺,若中途因某种缘故岩心堵塞了,轻则降低回次进尺,重则被迫提钻,严重的影响了台班进尺,特别是深孔,显著的加长了上下钻具的时间,增加工人的体力劳动,并且要多消耗研磨材料和岩心,因而在铁砂钻进中,防止岩心堵塞和岩心堵塞后及时消除,对提高钻进效率和岩心采取率有很大意义。
Iron core drilling core plugging is a common phenomenon, a more complete rock back to a good dry, you can drill 2-3 hours, footage of up to 1-2 meters, if the middle due to some reason, the core is blocked, light Then it will be reduced to the time when the footage will be rebuilt and the heavy drills will be forced. This will seriously affect the progress of the shift. In particular, the deep hole significantly lengthens the time of the upper and lower drilling tools, increases manual labor, and consumes more abrasive materials and cores Therefore, in the iron sand drilling, to prevent the core blockage and core blockage promptly eliminated, to improve drilling efficiency and core take rate is of great significance.