同时，钻井操作员们考虑钻一条减压井：原来的井斜角交错，钻井里可能充满了泥浆或混凝土块，阻塞了石油的通畅。

Meanwhile, well operators considered drilling a relief well: a diagonal well intersecting the original that could be filled with mud or concrete to block the flowing oil

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安装，调整和操作单功能机混合，钻，磨，切割混凝土以达到混凝土产品的制造规格。

Set up, adjust and operate single-function machines to mix, drill, grind and cut concrete to specifications in the manufacture of concrete products.

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这是第四纪地质条件下经冲击钻造孔并进行水下浇筑混凝土防渗墙工程资料的反馈。

This is the feedback of the seepage cutting concrete wall construction materials after masonry drills boring and casting underwater in the conditions of Quaternary geology.

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