泵的轴封采用机械密封，泵体顶部和底部分别装有注水、放泄的螺塞。
Pump shaft seals use mechanical seal, pump top and bottom, respectively, equipped with water injection plug and the drain plug.
一种装置，用于在注水泥作业过程中悬挂胶塞，直到将其释放并在注水泥作业中沿套管内泵入。
A device used to hold plugs until they are released and pumped down the casing during cementing operations.
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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