我队某孔是75°的斜孔,从开孔到70多公尺深处,均是黄土砾石层。以下即变硬且漏水,而在99公尺的地方,漏水更为严重,下套管、用黄泥掺油止水均未生效。且水供应不上,曾一度停钻。后鉴于任务紧迫,故进行了以压缩空气代替水钻进的试验(后因缺汽油和柴油压风机而告一段落)。试验结果证明,冲洗孔底岩粉、捞渣,取岩心等问题巳初步解决,且具有 A hole in my team is a 75 ° oblique hole, from the hole to more than 70 meters deep, are loess gravel. The following is hardened and leaking, and 99 meters, where leakage is more serious, under the casing, with yellow mud oil sealing water did not take effect. And the water supply is not on, once stopped drilling. In view of the urgent task, so with compressed air instead of water drilling test (after due to lack of gasoline and diesel air compressor come to an end). Test results show that flushing hole rock powder, slag, take the core and other issues have been initially solved, and has