• 针对自隔器存在井阻力大、损坏效果差等缺点研制了HNX344—114型皮碗封隔器

    Model HNX344—114 cup packer is developed in the light of frequent failure and bad sealing effect of self sealed cup packers.

    youdao

  • 针对自隔器存在井阻力大、损坏效果差等缺点研制了HNX344—114型皮碗封隔器

    Model HNX344—114 cup packer is developed in the light of frequent failure and bad sealing effect of self sealed cup packers.

    youdao

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