... casing anchor packer 套管锚定封隔器 casing anchor 套管锚 casing annulus 套管环空 ...
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casing anchor packer 套管锚定封隔器
well casing anchor 套管锚
casing anchor point 汽缸死点
screw casing anchor packer 用螺纹装置撑开及收缩的套管封隔器
anchor casing packer 锚定式套管封隔器
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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.
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。
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