广域电磁法在山东济阳坳陷氦气探测中的应用  

Application of Wide-field Electromagnetic Method in Helium Detection in Jiyang Depression

作　　者：胡创业 杜利明[1,2] 胡兆国 张保涛[1] 崔明飞[1,2] 顾延景 赵晓博[1] 陈琦 郑岩岩 HU Chuangye;DU Liming;HU Zhaoguo;ZHANG Baotao;CUI Mingfei;GU Yanjing;ZHAO Xiaobo;CHEN Qi;ZHENG Yanyan(Shandong Zhengyuan Geological Exploration Institute of China Metallurgical Geology Bureau,Jinan 250013,China;Enginerring Laboratory of Comprehensive Geophysical Technology for Deep Exploration,Jinan 250013,China)

机构地区：[1]中国冶金地质总局山东正元地质勘查院,济南250013 [2]山东省地球物理学会深部探测综合地球物理技术工程试验室,济南250013

出　　处：《华北地震科学》2024年第1期66-74,共9页North China Earthquake Sciences

基　　金：山东省自然资源厅地质勘查项目“山东省济阳坳陷氦气资源成藏规律与找矿预测研究”(鲁勘字(2021)19号);中国冶金地质总局山东局科研项目“山东省济阳坳陷氦气资源调查”(SDYJ-KY202105)。

摘　　要：利用广域电磁法在山东济阳坳陷氦气富集区开展方法实验,采用“电磁勘探资料处理解释一体化系统”进行广域电磁法数据处理与反演成像,获得地下3 km深度范围内的地层电阻率分布特征;建立了广域视电阻率与试验区盖层、储层之间的电性关系,同时也揭示了深部断裂构造与氦气运移通道之间的关系。在综合研究的基础上,基本查明了区内氦气主要储层馆陶组、东营组、沙一段、沙三段地层分布、厚度及氦气运移通道、构造圈闭等信息,形成了适用于济阳坳陷氦气勘探的广域电磁数据采集及处理方法,丰富了济阳拗陷氦气探测研究成果,为进一步推动济阳拗陷氦气勘探提供地球物理参数。The Jiyang Depression is an important distribution area of helium-rich natural gas in Shandong,which has favorable conditions for helium resource accumulation.The wide-field electromagnetic method was used to detect the helium enrichment area in Jiyang Depression,and the"Integrated System for the Processing and Interpretation of Electromagnetic Exploration Data"was used to process and invert the raw data of the wide-field electromagnetic method to obtain the distribution characteristics of the lithological resistivity of the strata within 3km underground.The electrical relationship between the wide-field apparent resistivity and the cover layers and storage layers in the test area was established,and the relationship between the deep fault structure and the helium migration channel was also revealed.On the basis of comprehensive research,the distribution and thickness of the main helium storage layers in the area,such as the Guantao Formation,the Dongying Formation,the first member of the Shahejie Formation and the third member of the Shahejie Formation,as well as the helium migration channels and structural traps,have been basically ascertained.Through this work,a wide-field electromagnetic data acquisition and processing method suitable for helium exploration in the Jiyang Depression has been formed,which enriches the research results of helium detection in Jiyang Depression and provides geophysical parameters for further promoting helium exploration in Jiyang Depression.

关 键 词：广域电磁法 济阳拗陷 电阻率 氦气勘探 

分 类 号：P618.13[天文地球—矿床学] TN929.5[天文地球—地质学]