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replacing bit without lifting drills
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replacing bit without lifting drills
Encyclopedia
理学
钻进工艺
释
replacing bit without lifting drills
不提钻换钻头
绳索取心钻进过程中,在不起下钻的情况下,将孔底旧钻头单独或随内管总成一起打捞至地面,并将新钻头单独或随内管总成一起下入孔底进行钻进的作业。
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更新时间:2025/6/9 18:57:25