The existing drifting device is still used in the new system,but an automatic hanger and a power slip are used to replace the previous two sets of hangers.
系统仍利用现有的通井机,用一个自动吊卡和一个动力卡瓦代替原来的2组吊卡,井架上安装自动吊卡运行导轨,用坐式自动化闭口液压动力大钳代替原悬吊式开口液压钳,并配备管柱自动拉排滑车机构拉送排放油管。
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