羊场湾煤矿大孔径定向输料钻孔施工实践

Large Diameter Directional Transporting Drilling Construction Practice in Yangchangwan Coal Mine of Shenhua Ningxia Coal Group

随着钻探技术的快速发展,其应用范围也有了很大的扩展,文中介绍了羊场湾煤矿大孔径定向输料钻孔的井身结构、钻进方法、设备选择,并对施工中遇到的泥浆净化、孔内漏失、停复工处理、套管下设、插入式固井等技术难点进行了分析,针对这些难点采取的应对措施及实际效果,文中也进行了详细阐述。

With the rapid development of drilling technology,its application has been extended.This paperintroduces the wellbore configuration,drilling method,equipment selection of large diameter drill inYangchangwan Coal Mine,and analyzes the technical difficulties for mud purification,hole leakage,stop andrestart processing,casing installment and inserted well cementation,describe the solution and actual result indetail for these difficulties.