A new type shale inhibiter，KLG and sealing agent are used to seal fragile formation so that we can enhance safety density and solve the problem of hole collapse.
防塌剂和KLG以及封堵材料复配使，对破碎地层进行了有效封堵；
A new type shale inhibiter，KLG and sealing agent are used to seal fragile formation so that we can enhance safety density and solve the problem of hole collapse.
防塌剂和KLG以及封堵材料复配使，对破碎地层进行了有效封堵；
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