套管浮箍浮鞋选型分析及失效预防措施

浮箍浮鞋失效会造成管内留塞，环空水泥浆返高不够，增加作业时间和成本。对比分析了不同类型浮箍浮鞋的结构和技术特点。结合API标准，介绍了浮箍浮鞋的主要性能评价指标和测试标准。分析了浮箍浮鞋失效的影响因素，并提出针对性的预防措施。为不同井况下浮箍浮鞋的合理选型及提高使用成功率提供参考。

Type Selection and Failure Prevention Measures of Casing Float Equipment

Float collar and float shoe can effectively prevent the annular cement slurry from being poured back into the pipe after cementing, and they can be used as an internal spraying tool, while the guide pipe string is smoothly entered into the well, increasing the buoyancy of the pipe string in the lower casing process, which is crucial to improving the cementing quality. On the basis of the comparative analysis of the structure and technical characteristics of different float collars and float shoes, the main performance evaluation indicators and test standards of float equipment were introduced, the influencing factors of the failure of float equipment were analyzed, and the targeted preventive measures were put forward to provide a reference for the reasonable selection of the float equipment under different well conditions and the improvement of the success rate of use.