瑶沟金矿区复杂地层岩心钻探技术分析  

Discussion on Core Drilling Technology of Complex Strata in Yaogou Gold Mining Area

作　　者：王江平 时志兴 孟祥瑞 WANG Jiang-ping;SHI Zhi-xing;MENG Xiang-rui(Henan Provincial Non-ferrous Metals Geological and Mineral Resources Bureau No.3 Geological Team,Zhengzhou 450016,China;Henan Provincial Non-ferrous Metals Geological and Mineral Resources Bureau No.1 Geological Team,Zhengzhou 450016,China;Henan Provincial Non-ferrous Metals Geological and Mineral Resources Bureau No.4Geological Team,Zhengzhou 450016,China)

机构地区：[1]河南省有色金属地质矿产局第三地质大队,郑州450016 [2]河南省有色金属地质矿产局第一地质大队,郑州450016 [3]河南省有色金属地质矿产局第四地质大队,郑州450016

出　　处：《价值工程》2022年第28期156-158,共3页Value Engineering

摘　　要：主要介绍了河南省嵩县瑶沟金矿区复杂地层钻探施工,以钻孔ZK35063施工为例,钻孔设计孔深700m,设计倾角80°,上部有约11.8m卵砾石层,坍塌、掉块、漏失水、取心困难等;下部复杂层段强蚀变的英安岩,绿泥石化、水敏性的安山岩裂隙发育,易坍塌、缩径、卡挤钻,致使钻头、钻杆严重磨损、发生钻杆断裂事故。文章通过钻机选择、下套管、跟管钻进、改善钻进工艺、优化钻孔结构、配置优质冲洗液等措施实时解决了上述问题,有很好的借鉴意义。This paper mainly introduces the drilling construction of complex strata in Yaogou Gold Mining area,Songxian County,Henan Province.Taking drilling ZK35063 as an example,the designed hole depth is 700 meters,the designed inclination Angle is 80°,and the upper part is about 11.8m gravel layer,collapse,block falling,water leakage,difficulty in coring,etc.Strong alteration of the lower complex strata of the quartz,chloritization,water sensitive andesite fracture development,easy to collapse,shrinkage,stuck squeeze drill,resulting in serious wear drill bit,drill pipe,drill pipe fracture accident.The above problems were solved in real time by selecting drilling rig.

关 键 词：跟管钻进 钻孔漏失 坍塌缩径 钻杆断裂 优质冲洗液 

分 类 号：P634[天文地球—地质矿产勘探]