时频电磁法频率域视电阻率求取方法研究  

Calculation and Application of Apparent Resistivity in the Frequency Domain by TFEM

作　　者：李竹强 付国强[1] 谭绍泉 陈学国[2] 郭涛[2] 相鹏[2] 杨永红[2] 何展翔[3] Li Zhu-Qiang;Fu Guo-Qiang;Tan Shao-Quan;Chen Xue-Guo;Guo Tao;Xiang Peng;Yang Yong-Hong;He Zhan-Xiang(School of Resources and Geosciences,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China;Exploration and Development Research Institute of Shengli Oilfi eld Company,Sinopec,Dongding,Shandong 257000,China;SUSTech Academy for Advanced Interdisciplinary Studies,Shenzhen,Guangdong 518000,China)

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221116 [2]中国石化胜利油田分公司勘探开发研究院,山东东营257000 [3]南方科技大学前沿与交叉科学研究院,广东深圳518055

出　　处：《Applied Geophysics》2024年第2期409-417,422,共10页应用地球物理（英文版）

基　　金：supported by the Project supported by the Jiangsu Province Carbon Peak Carbon Neutral Technology Innovation Project in China(BE2022034);the Sinopec Science and Technology Research Project(No.P21079-3 and No.P22090);the Shengli Oilfi eld Company Science and Technology Research Project(No.YKS2201).

摘　　要：时频电磁法(TFEM)是一种应用于油气勘探领域,可同时实现时间域和频率域电磁一体化勘探的可控源电磁方法。本文引入水平电流场源定义的广义视电阻率,结合TFEM的发射源特征,实现TFEM频率域视电阻率的求取;分析不同偏移距、发设距水平电场振幅和视电阻率特征,验证了方法的可行性。TFEM频率域视电阻率的求取和基于模型的研究,为TFEM勘探采集参数的设计和采集数据的处理提供科学的借鉴和参考。The time-frequency electromagnetic method(TFEM)is a controllable source electromagnetic method applied to oil and gas exploration.In traditional TFEM,the amplitude and phase of the electric fi eld are used to correct the data in the frequency domain.It also contains information about the parameters of the observation system;therefore,it is challenging to directly correct the data,which aff ects the effi ciency and precision of data processing.This study introduces the generalized apparent resistivity defi ned by the horizontal current fi eld source and obtains the apparent resistivity in the frequency domain of a TFEM by combining the characteristics of the TFEM emitter and an observation system.The feasibility of the proposed method was verifi ed by analyzing the characteristics of the electric fi eld amplitude and apparent resistivity of the primary observation parameters,such as the off set and launch distance.The calculation of apparent resistivity in the frequency domain of TFEM and research based on the model provide scientifi c references for the design of TFEM exploration and data processing.

关 键 词：时频电磁法 频率域 视电阻率 采集参数设计 采集数据处理 

分 类 号：P631.325[天文地球—地质矿产勘探]