安溪黄厝坪铁矿区复杂地层钻孔护壁堵漏实践

Practice of Wall Protection and Leakage Control in Complex Formation of Huangcuoping Iron Mine of Anxi

摘要:

福建省安溪县黄厝坪铁矿区地层复杂，设计钻孔2个。01孔钻探中遇多孔段漏失，反复采用多种堵漏方法顺利终孔，但严重影响了钻探效率。经过总结经验和教训，在02孔施工中，对护壁堵漏措施进行了完善，较好地解决了钻进漏失问题，取得了良好的效果。介绍了2个钻孔的护壁堵漏过程，总结了在破碎漏失严重地层的堵漏对策以及堵漏方法的选择经验。

关键词:破碎地层;钻孔漏失;堵漏;护壁;灌水泥;堵漏剂

Abstract:

There are 2 designed boreholes in the complex formation in Huangcuoping iron mining area of Anxi, Fujian. Hole 01 drilling encountered leakage sections, several control methods were taken for the completion but drilling efficiency was seriously affected. The experience and lessons were summed up for the Hole 02, improvement was made on the wall protection and leakage control with good result. The paper introduced the process of wall protection and leakage control in the 2 holes, summed up the leakage control measures and the experience of selecting control method in serious broken and leakage formation.

Key words:broken formation; borehole leakage; leakage control; wall protection; cement grouting; lost circulation agent