地球物理测井在铜镍多金属矿区中的应用
Application of Geophysical Logging in Copper-nickel Polymetallic Mining Area
陈娜 1王亚辉 1米慧慧 1张愿飞 1李普站1
作者信息
摘要
通过多个参数的综合地球物理测井技术,以钻探编录资料和实验室化验资料为约束条件,开展有色金属地质调查测井资料的综合处理与解释,来揭示铜镍多金属矿矿床主要岩性剖面的天然放射性、密度、电性及磁性特征,分析总结含矿地层的地球物理测井曲线响应特征.分析结果表明:高视极化率、高磁化率、高视密度及低视电阻率异常是区内主要成矿地层最典型的地球物理测井响应特征,且异常由辉长岩的黄铁矿化、磁铁矿化引起;矿化度为取心率不足的钻孔及非取心钻孔中定性、定量划分含矿地层提供充分的理论依据,初步建立了深部资源探测地球物理测井技术方法体系.
Abstract
Based on the comprehensive geophysical logging technology of multiple parameters,the comprehensive processing and interpretation of non-ferrous metal geological survey logging data are carried out under the constraints of drilling records and laboratory test data.The natural radioactivity,density,elec-trical property and magnetic characteristics of the main lithological sections of the Cu-Ni polymetallic depos-it are revealed,and the response characteristics of the geophysical logging curve of the ore-bearing strata are analyzed and summarized.The results show that high apparent polarizability,high magnetic susceptibili-ty,high apparent density and low apparent resistivity are the most typical geophysical logging response char-acteristics of the main ore-forming strata in the area,and the anomalies are caused by pyritization and mag-netization of gabbro.Salinity provides sufficient theoretical basis for qualitative and quantitative classifica-tion of ore-bearing strata in boreholes and non-coring boreholes with insufficient heart rate,and preliminar-ily establishes a geophysical logging technology system for deep resource exploration.
关键词
地球物理测井/地质特征/铜镍多金属矿区/矿产资源勘查Key words
geophysical logging/geological feature/copper-nickel polymetallic mining area/mineral resource exploration引用本文复制引用
出版年
2024
NETL
NSTL
万方数据