浮箍浮鞋

浮箍，浮鞋是一种能产生浮力的一种套管引鞋或接箍。由于浮鞋或浮箍耐高温，密封性和可钻性好，连接方便，因而可代替引鞋，套管鞋等。浮鞋或浮箍不仅可用于一般技术套管和油层套管，而且也可用于深井，超深井及特殊工艺井。

浮鞋在套管柱末端，代替引鞋。起引鞋和回压凡尔的作用。浮箍接在距套管末端20-30米处。起承托环和回压凡尔的作用。浮鞋主要由浮鞋体、水泥引鞋、球、球座组成。

浮鞋与浮箍的内部结构基本相同。只是浮箍体的上、下端均为API套管螺纹。

FloatCollar and Float Shoe

Float Collar and Float Shoe is a kind of casing and couple fromwhich the buoyancy can be obtained. It can be used to replace theguide shoe and casing shoe because of it high temperatureresistance, good seal, drill ability and is easy to make up. It isused not only in technical and oil layer casing but also in deepwell, super deep and special technical wells.

 

    The float shoe is connected to the end of thecasing string to replace the guide shoe. It works as a guide andback pressure valve. The float collar connects the casing stringfrom 20-30 meters to the end of the casing string.

 

    The inner structure of the float collar and thefloat shoe is similar. The only difference is that the float collaris equipped with API casing threads at both ends.