基于电阻率测井曲线的大地电磁测深标定  

Calibration of magnetotelluric sounding based on resistivity logging curves

作　　者：赵理芳[1] 李爱勇[1] 王导丽[1] 张明鹏[1] 周锡明[1] ZHAO Li-Fang;LI Ai-Yong;WANG Dao-Li;ZHANG Ming-Peng;ZHOU Xi-Ming(No.814 Team,East China Mineral Exploration and Development Bureau for Non-ferrous Metals of Jiangsu Province,Zhenjiang 212004,China)

机构地区：[1]江苏省有色金属华东地质勘查局八一四队,江苏镇江212004

出　　处：《物探与化探》2022年第3期737-742,共6页Geophysical and Geochemical Exploration

基　　金：江苏省有色金属华东地质勘查局2019年度基础研究专项资金项目(HDYS-KY2019-02)。

摘　　要：大地电磁测深曲线畸变的校正是大地电磁勘探中的重要问题。通过在D盆地的电阻率测井曲线与大地电磁测深平移方式校正前后的反演测深曲线相比较,构造变换函数,实现了测井曲线对大地电磁测深曲线的标定。经过该技术改进的大地电磁反演结果与验证钻孔极为吻合,结合钻井、地震、重力、磁法资料进行综合分析,有效地揭示了D盆地的构造特征。The distortion correction of magnetotelluric sounding curves is critical to magnetotelluric exploration.Based on the comparison between the resistivity logging curves of basin D and the basin's inversed sounding curves before and after being corrected through magnetotelluric sounding translation,this study constructed a transformation function and calibrated magnetotelluric sounding curves using logging curves.The magnetotelluric inversion results improved using the calibration technology proposed in this study are highly consistent with the verification boreholes.Finally,this study effectively revealed the structural characteristics of basin D by combining drilling,seismic,gravitational,and magnetic data.

关 键 词：测井曲线 大地电磁测深 标定 变换函数 

分 类 号：P631[天文地球—地质矿产勘探]