——我给他人上课 那天,作为一名钻机队机长的我到井下跟班。那里正在施工卸压钻孔。当时由于压力过大,瓦斯涌出量高,麻花钻杆穿过煤层时屡屡出现卡钻现象。在没有退路的情况下,只好用光钻杆带水强行穿过煤层。 在钻机的轰鸣声中,隐隐听到迎头有滚雷声。我当 - On the day I gave to others, as a captain of a drilling crew, I went downstairs to work with the class. Where pressure relief drilling is under construction. At that time, due to excessive pressure, gas emission is high, twist drill drill stuck through the seam often appear. In the absence of retreat circumstances, had to use light drill pipe water forced through the seam. In the roar of drilling rig, faintly hear the roll of thunder. I should