石油钻井用可钻式浮箍浮鞋在煤矿回灌井中的应用

Application of Drillable Float Collar and Float Shoe for Petroleum Drilling in Recharge Well of Coalmine

摘要:

将石油专用的可钻式浮箍浮鞋用于煤矿大口径钻孔下套管及固井工作中，替代传统的打水泥座或焊钢板浮力塞加单向注浆阀下套管固井工艺,简化了下套管和固井施工程序，节约工程成本，保证了成井质量。介绍了这种方法在冀中能源峰峰集团梧桐庄矿回灌1号孔和2号孔的应用情况及效果。

关键词:可钻式浮箍浮鞋;下套管;固井;大口径钻孔

Abstract:

The special petroleum drillable float collar and float shoe are applied in the casing running in large diameter borehole of coalmine and well cementing. With this new technology, the conventional cement base setting or floating plug by welding steel plate to the case+one-way grouting valve is replaced and the procedure of casing running and well cementing are simplified. By these means, the engineering cost is saved and the well quality is guaranteed. The paper introduces the technology application and the effect in recharging hole of Wutongzhuang mine.

Key words:drillable float collar and float shoe; casing running; well cementing; large diameter borehole