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reverse circulation cementing
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reverse circulation cementing
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reverse circulation cementing
反循环注水泥
从套管外环空按设计量向井内注入水泥浆,钻井液从套管中空返出,当井底漏失严重使钻井液直接露入地层时,再用钻井液将水泥浆顶替到预定位置的固井工艺。
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