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    • 2. 发明授权
    • Well stabilization tools and methods
    • 井稳定工具和方法
    • US5711375A
    • 1998-01-27
    • US692868
    • 1996-08-02
    • Krishna M. RaviRobert M. BeiruteAlan B. DuellHenry E. RogersDick A. MurrayEarl D. Webb
    • Krishna M. RaviRobert M. BeiruteAlan B. DuellHenry E. RogersDick A. MurrayEarl D. Webb
    • E21B33/13E21B34/14E21B23/00
    • E21B33/13E21B34/14
    • The present invention relates to tools and methods for stabilizing incompetent or otherwise unstable subterranean zones or formations penetrated by a well bore during drilling. The methods basically comprise drilling the well bore through an unstable subterranean zone or formation when it is encountered, pumping a fluid through a well stabilization tool while moving the tool through the portion of the well bore in the unstable zone or formation whereby fluid jets formed by the well stabilization tool enlarge the diameter of the well bore by fluid jet erosion, pumping a hardenable cementitious material through the well stabilization tool while moving the tool through the enlarged portion of the well bore whereby the enlarged portion is filled with the hardenable cementitious material, allowing the cementitious material to harden and then drilling the well bore through the hardened cementitious material.
    • 本发明涉及用于在钻井期间稳定由井眼穿透的不称职或其他不稳定的地下区域或地层的工具和方法。 这些方法基本上包括在遇到不便的地下区域或地层时钻井井,当液体通过井稳定工具泵送流体,同时使工具移动通过不稳定区域或地层中的井眼部分,由此由 井稳定工具通过流体喷射冲蚀扩大井眼的直径,在将工具通过井眼的扩大部分移动时,将可硬化水泥材料泵送通过井稳定工具,由此扩大部分填充有可硬化的水泥质材料, 允许水泥材料硬化,然后通过硬化的水泥质材料钻孔。