follower plug
... follower head 后端头 follower plug 注水泥上塞 follower 随员 ...
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安装在套管柱底部附近的一个部件,在初次注水泥作业期间水泥塞坐放于其上。
A component installed near the bottom of the casing string on which the cement plugs land during the primary cementing operation.
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