A float collar is placed at the top of the float joint and a float shoe placed at the bottom to prevent reverse flow of cement back into the casing after placement.
浮箍是放置于浮动接头之上的，而浮鞋则是放置于浮动接头之下，以防止水泥浆回流到套管内。
Cement was displaced with pressure indications observed as the top plugs passed through the plug-locator collar and the top wiper plugs bumped on the respective float collars.
随着顶部胶塞通过胶塞定位浮箍达到相应浮箍位置，水泥在压力指示确认下完成顶替过程。
Cement was displaced with pressure indications observed as the top plugs passed through the plug-locator collar and the top wiper plugs bumped on the respective float collars.
随着顶部胶塞通过胶塞定位浮箍达到相应浮箍位置，水泥在压力指示确认下完成顶替过程。
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