相山铀矿田深部探测3000 m科学深钻施工技术  

Drilling technology for 3000 meter borehole in Xiangshan uranium field

作　　者：刘晓阳 李博[1,2,3] 段志强 LIU Xiaoyang;LI Bo;DUAN Zhiqiang(National Key Laboratory of Uranium Resources Exploration-Mining and Nuclear Remote Sensing,Beijing 100029,China;Beijing Research Institute of Uranium Geology,Beijing 100029,China;CNNC Key Laboratory of Uranium Resource Exploration and Evaluation Technology,Beijing 100029,China;Research Institute No.270,CNNC,Nanchang 330200,China)

机构地区：[1]铀资源探采与核遥感全国重点实验室,北京100029 [2]核工业北京地质研究院,北京100029 [3]中核集团铀资源勘查与评价技术重点实验室,北京100029 [4]核工业二七○研究所,江西南昌330200

出　　处：《世界核地质科学》2025年第1期1-12,共12页World Nuclear Geoscience

基　　金：核能开发项目(编号:地HXS1403);中国核工业地质局项目“铀矿勘查钻探施工数字化监测与控制技术研究”(编号:202347-1)联合资助。

摘　　要：为了揭露相山火山盆地完整地质结构,探索盆地中部成矿前景和潜力,相山铀矿田深部探测二期项目在盆地中部杏树下地区部署了3000 m科学深钻,孔号CUSD2-1。为保障深钻顺利施工,采用先进的交流变频电动顶驱式地质岩心钻机、大口径绳索取心钻进工艺、防斜控斜绳索取心钻具、高效金刚石钻头和高效减阻冲洗液,成功解决坚硬岩石钻进时效低、破碎地层孔壁稳定、钻孔漏失、强造斜地层防斜控斜、大口径绳索取心安全钻进等复杂地层深孔钻探施工技术难题,顺利钻探至预定深度,创造我国地质岩心钻探S(φ150 mm)口径绳索取心最深纪录,揭示深部地层结构,为深部铀资源探测提供宝贵的地质资料。此次深钻不仅对深部铀资源科学探索研究具有特殊意义,同时也对深孔-特深孔地质岩心钻探工程技术提升具有重大意义。In order to reveal the complete geological structure of Xiangshan volcanic basin and explore the metallogenic prospect and potential in the central part of the basin,the Xiangshan Uranium Field Deep Scientific Exploration phase II project deployed a 3000 meter deep scientific borehole,named CUSD2-1,at“Xingshuxia”in the central part of the basin.To insure the smooth conduction of the drilling,we adopted the advanced AC frequency conversion electric top drive geological core drill,large diameter wireline core drilling technology,anti-inclination and control wireline core drilling tools,high efficiency diamond bit and efficient drag reducing lubricating drilling fluid,which successfully solved the technical problems of deep drilling in complex formation,such as low drilling speed in hard rock,stable hole wall in broken formation,hole leakage,anti-inclination and control in strongly deflecting formation,and safe drilling with large diameter wireline coring,and finally drilled to the predetermined depth,creating the deepest record of S(φ150 mm)diameter wireline coring in geological core drilling in China,and revealed the deep formation structure.This deep drilling provides valuable geological data for deep uranium resource exploration in Xiangshan,which not only has special significance for the scientific research and exploration of deep uranium resources,but also has great significance for the improvement of engineering technology for deepultra deep geological drilling.

关 键 词：相山铀矿田 深部探测 科学深钻 施工技术 钻探设备 

分 类 号：P634[天文地球—地质矿产勘探]