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    發布日期:2019-10-24   

    1、立管壓力表指數突然升高
    2、立管壓力表指數升高,但不是隨鉆井深度增加而增長的正常壓降
    3、壓力表指數緩慢降低
    4、無進尺
    具體解決方法見《鉆具故障分析及排除表

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