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    In Yanchang oilfield, serious lost circulation often occur during drilling in Panlong and Zichang areas, directly affect drilling rate.

    youdao

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    Swivel packing seal assembly is the key of the swivel, whose function directly influences its service life, further more, and affects the drilling speed.

    youdao

  • 盘根密封(水)龙头关键环节,性能直接影响(水)龙头的寿命钻井速度

    Swivel packing seal assembly is the key of the swivel, whose function directly influences its service life, further more, and affects the drilling speed.

    youdao

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