bottom plug

基本解释

In most operations, a bottom plug is launched before the spacer or cement slurry.
大部分作业，总是在泵入隔离液或水泥浆之前先下入下胶塞。
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The top plug has a solid body that provides positive indication of contact with the landing collar and bottom plug through an increase in pump pressure.
顶塞具有一个实心的塞体，根据泵压的增加它能可靠地显示与止塞箍和底塞的接触。
When cleaning, unscrew the head bottom plug, drain fluid, remove the flange cover, remove the filter basket, cleaning and re load can, therefore, maintenance is extremely easy to use.
当需要清洗时，旋开主管底部螺塞，排净流体，拆卸法兰盖，取出滤篮，清洗后重新装入即可，因此，使用维护极为方便。

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Little did they know that after losing 20, 30, 40 percent or more that they would have a strong emotional reaction to the loss and pull the plug, often near the market bottom.
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And following the intersection of the well bore with those relief wells, they will put heavy mud down there to suppress the pressure of the oil coming up from the reservoir, put a cement plug in and effectively do what I would call a bottom kill, as opposed to the top kill, which was not successful a couple of weeks ago.
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