司家营（南）区大贾庄铁矿复杂地层深孔钻探技术

Deep Hole Drilling Technology in Complex Formation of Daguzhuang Mining Section in South of Sijiaying Iron Mine

摘要:

总结了滦县司家营（南区）铁矿大贾庄矿段复杂地层深孔钻探施工技术经验，着重分析了厚覆盖层和破碎漏失、坚硬“打滑”地层的钻进方法，同时介绍了保证复杂地层岩心采取率及控制钻孔弯曲超差偏离勘探线的技术措施。通过大贾庄矿段深部钻探施工，提出了千米以深钻孔复杂地层的钻探施工技术措施和保证钻探施工质量应注意的事项及措施。

Abstract:

The paper summarized the deep drilling construction experience in complex formation of Daguzhuang mining section in south Sijiaying iron mine, emphatically analyzed the drilling methods for thick overburden, breaking & leakage, hard and slipping formations and also introduced the technical measures for guaranteeing core recovery in complex formation and the control of oversize deviation of hole deflection from the prospecting line. Based on the deep drilling construction in Daguzhuang mining section, the drilling technical measures for borehole of 1 kilometer and more in complex formation and the attentions & measures for guaranteeing drilling construction quality were put forward.