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。
The float shoe prevents reverse flow, or U-tubing, of cement slurry from the annulus into the casing.
浮鞋能够防止环空中的水泥浆向套管内流动这种回流或者U型管效应的发生。
Colored plastic, inks, gramophone records, shoe polish, paint cloth, leather paints, colored cement, electrodes, brush, dry batteries and so on.
塑料着色、墨水、留声机唱片、鞋油、油漆布、皮革涂料、有色水泥、电极、电刷、干电池等方面。
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