eccentric gas lift valve
... 所生之心气 Mindprana ; prana 偏心气举阀 eccentric gas lift valve 令人心气平和 Making Heart Easy ...
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偏心气举阀工作筒 side-pocket gas-lift mandrel
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大气量时应用偏心气锚安装气举阀与地面单流阀两步卸气，实现了下部产层和油套环空自动卸气。
Ortherwise, the eccentric gas anchor, gas lift valve and surface check valve are installed to automatically unload the gas from the deeper layer and annulus between the tubing and the casing.
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