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词汇
mud off, shaft wall protection by drilling mud
释义
mud off, shaft wall protection by drilling mud
泥浆护壁;采用钻井法时,利用井内泥浆的静压力压强平衡地压与水压,并使泥浆渗入围岩形成泥皮,以维护井帮的方法。
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punching over-capacity
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更新时间:2025/3/22 13:20:46