Please wait a minute...
E-mail Alert Rss
 
物探与化探  2020, Vol. 44 Issue (6): 1415-1419    DOI: 10.11720/wtyht.2020.1517
  方法研究·信息处理·仪器研制 本期目录 | 过刊浏览 | 高级检索 |
瞬变电磁的逆时偏移成像方法
陈紫静1(), 陈清礼2
1.中国石化西北油田分公司采油一厂,新疆 轮台 841600
2.长江大学 油气资源与勘探技术教育部重点实验室,湖北 武汉 430100
Transient electromagnetic inverse time migration imaging method
CHEN Zi-Jing1(), CHEN Qing-Li2
1. No. 1 Oil Production Plant of Northwest Oil Field Company, Sinopec, Luntai 841600, China
2. School of Geophysics and Petroleum, Yangtze University, Wuhan 430100, China
全文: PDF(806 KB)   HTML
输出: BibTeX | EndNote (RIS)      
摘要 

本文研究了中心回线瞬变电磁测深的逆时偏移成像问题。针对电磁波在大地中的传播速度远小于真空中的光速这个特性,设计了一种适用于中心回线观测方式瞬变电磁测深的逆时偏移成像的算法,其核心思想是根据不同观测点在成像点相同时刻的波场值的叠加,进而获得成像点的总波场值。基于该算法,对一条实测的中心回线瞬变电磁测深资料进行了逆时偏移成像处理,结果表明,逆时偏移成像结果与实际情况比较吻合,得到了比较好的处理效果。因此,逆时偏移成像方法是瞬变电磁测深法的一种比较有效的资料处理方法。

服务
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章
陈紫静
陈清礼
关键词 电法勘探瞬变电磁测深逆时偏移成像电磁波速度    
Abstract

In this paper, inverse time migration imaging of center loop transient electromagnetic sounding is studied. In view of the fact that the propagation velocity of electromagnetic wave in the earth is much lower than that of the speed of light in the vacuum, an inverse time migration imaging algorithm is designed which is suitable for transient electromagnetic sounding in the center loop observation configuration. The core idea of the algorithm is to obtain the total wave field value of the imaging point according to the superposition of the wave field value of different observation points at the same time of the imaging point. Based on this algorithm, inverse time migration imaging was performed on a measured center loop transient electromagnetic sounding data. It is shown that the results of inverse time migration imaging are in good agreement with the actual situation and can obtain better processing effect. Therefore, inverse time migration imaging is an effective data processing method for transient electromagnetic sounding.

Key wordselectrical prospecting    transient electromagnetic sounding    inverse time migration imaging    electromagnetic velocity
收稿日期: 2019-11-02      出版日期: 2020-12-29
:  P631  
基金资助:国家重点研发计划项目(2018YFC060330502)
作者简介: 陈紫静(1990-),桂林理工大学硕士研究生毕业,主要从事地球物理的研究工作。Email:845237768@qq.com
引用本文:   
陈紫静, 陈清礼. 瞬变电磁的逆时偏移成像方法[J]. 物探与化探, 2020, 44(6): 1415-1419.
CHEN Zi-Jing, CHEN Qing-Li. Transient electromagnetic inverse time migration imaging method. Geophysical and Geochemical Exploration, 2020, 44(6): 1415-1419.
链接本文:  
https://www.wutanyuhuatan.com/CN/10.11720/wtyht.2020.1517      或      https://www.wutanyuhuatan.com/CN/Y2020/V44/I6/1415
电阻率
/(Ω·m)
频率
/Hz
精确速度
/(m·s-1)
近似速度
/(m·s-1)
以毫秒为单位的近似
速度/(m·ms-1)
与光速的比
10 0.001 316.23 316.23 0.32 1.05409E-06
10 0.01 1000.00 1000.00 1.00 3.33333E-06
10 0.1 3162.28 3162.28 3.16 1.05409E-05
10 1 10000.00 10000.00 10.00 3.33333E-05
10 10 31622.78 31622.78 31.62 0.000105409
10 100 100000.00 100000.00 100.00 0.000333333
10 1000 316227.68 316227.77 316.23 0.001054092
10 10000 999997.22 1000000.00 1000.00 0.003333324
100 0.001 1000.00 1000.00 1.00 3.33333E-06
100 0.01 3162.28 3162.28 3.16 1.05409E-05
100 0.1 10000.00 10000.00 10.00 3.33333E-05
100 1 31622.78 31622.78 31.62 0.000105409
100 10 100000.00 100000.00 100.00 0.000333333
100 100 316227.68 316227.77 316.23 0.001054092
100 1000 999997.22 1000000.00 1000.00 0.003333324
100 10000 3162189.82 3162277.66 3162.19 0.010540633
100 0.001 1000.00 1000.00 1.00 3.33333E-06
1000 0.01 10000.00 10000.00 10.00 3.33333E-05
1000 0.1 31622.78 31622.78 31.62 0.000105409
1000 1 100000.00 100000.00 100.00 0.000333333
1000 10 316227.68 316227.77 316.23 0.001054092
1000 100 999997.22 1000000.00 1000.00 0.003333324
1000 1000 3162189.82 3162277.66 3162.19 0.010540633
1000 10000 9997222.61 10000000.00 9997.22 0.033324075
Table 1  电磁波在介质中的传播速度
Fig.1  一个测点的实测感应电动势曲线
Fig.2  中心回线瞬变电磁法逆时偏移成像断面
[1] 牛之琏. 时间域电磁法原理[M]. 长沙: 中南大学出版社, 2007.
[1] Niu Z L. Principle of electromagnetic method in time domain [M]. Changsha: Central South University Press, 2007.
[2] 薛国强, 李貅, 底青云. 瞬变电磁法理论与应用研究进展[J]. 地球物理学进展, 2007,22(4):1195-1200.
[2] Xue G Q, Li X, Di Q Y. The progress of TEM in theory and application[J]. Progress in Geophysics, 2007,22(4):1195-1200.
[3] Strack K-M, Vozoff K. Integrating long-offset transient electromagnetics (LOTEM) with seismics in an exploration environment[J]. Geophysical Prospecting, 1996,44(6):997-1017.
[4] Strack K M, Hanstem T, LeBrocq K, et al. Case histories of long-offset transient electromagnetics(LOTEM) in hydrocarbon prospective areas[J]. First Break, 1989(7):467-477.
[5] Manzella A, Volpi G, Zaja A. Combined TEM-MT Investigation of Shallow-depth resistivity structure of Mt Somma-Vesuvius[J]. Journal of Volcanology and Geothermal Research, 2004,131:19-32.
[6] 严良俊, 胡文宝, 陈清礼, 等. 长偏移距瞬变电磁测深法在碳酸盐岩覆盖区落实局部构造的应用效果[J]. 地震地质, 2001,23(2):271-276.
[6] Yan L J, Hu W B, Chen Q L, et al. Trial with lotem to investigate detailed geologial structure in the area covered with carbonatite[J]. Seismology and Geology, 2001,23(2):271-276.
[7] 严良俊, 王正茂, 谢兴兵. 表层结构调查中的TEM地形校正[J]. 勘探地球物理进展, 2007,30(5):396-398.
[7] Yan L J, Wang Z M, Xie X B. Topographic correction for TEM data and its application in near surface investigation[J]. Progress in Exploration Geophysic, 2007,30(5):396-398.
[8] 张保祥, 刘春华. 瞬变电磁法在地下水勘查中的应用研究综述[J]. 地下水, 2004,26(2):129-133.
[8] Zhang B X, Liu C H. Review of the application of tem in groundwater exploration[J]. Ground Water, 2004,26(2):129-133.
[9] 廖忠, 李文尧. 线源TEM 在腾冲热水塘寻找地热的应用效果[J]. 工程勘探, 2002(2):67-69.
[9] Liao Z, Li W Y. The application effect of TEM in Tengchong geothermal reservoir survey[J]. Geotechnical Investigation & Surveying, 2002(2):67-69.
[10] 陈清礼, 严良俊, 胡文宝, 等. 瞬变电磁法探测水库坝基溶洞的效果[J]. 长江大学学报:自然科学版, 2005,2(7):201-203.
[10] Chen Q L, Yan L J, Hu W B, et al. Effect of transient electromagnetic method (TEM) for probing karst cave in dam foundation[J]. Journal of Yangtze University:Natural Science Edition, 2005,2(7):201-203.
[11] 陈卫, 杨生, 王有霖, 等. 时间域瞬变电磁法在地质勘探中的应用[J]. 矿产与地质, 2006,20(4):538-542.
[11] Chen W, Yang S, Wang Y L, et al. Application of TEM in geological exploration[J]. Mineral Resources and Geology, 2006,20(4):538-542.
[12] 周平, 施俊法. 瞬变电磁法(TEM)新进展及其在寻找深部隐伏矿中的应用[J]. 地质与勘探, 2007,43(6):63-69.
[12] Zhou P, Shi J F. New progresses and application of transient electromagnetic method (TEM) in deep-concealed ore finding[J]. Geology and Prospecting, 2007,43(6):63-69.
[13] 蒋邦远. 实用近区磁源瞬变电磁法勘探[M]. 北京: 地质出版社, 1998: 162-198.
[13] Jiang B Y. Practical near-field magnetic source transient electromagnetic exploration [M]. Beijing: Geological Publishing House, 1998: 162-198.
[14] 薛国强, 李貅, 底青云. 瞬变电磁法正反演问题研究进展[J]. 地球物理学进展, 2008,23(4):1165-1172.
[14] Xue G Q, Li X, Di Q Y. Research progress in TEM forward modeling and inversion calculation[J]. Progress in Geophysics, 2008,23(4):1165-1172.
[15] 陈清礼, 严良俊, 付志红, 等. 长偏移距瞬变电磁法全区视电阻率的二分搜索数值算法[J]. 石油地球物理勘探, 2009,44(6):779-782.
[15] Chen Q L, Yan L J, Fu Z H, et al. The all-time apparent resistivity bisearch numerical algorithm based on long offset transient electromagnetic method[J]. OGP, 2009,44(6):779-782.
[16] 付志红, 孙天财, 陈清礼, 等. 斜阶跃场源瞬变电磁法的全程视电阻率数值计算[J]. 电工技术学报, 2008,23(11):15-21.
[16] Fu Z H, Sun T C, Chen Q L, et al. Numerical calculation of all-time apparent resistivity for ramp transient electromagnetic method[J]. Transactions of China Electrotechnical Society, 2008,23(11):15-21.
[17] 白登海, Meju M A, 卢健, 等. 时间域瞬变电磁法中心方式全程视电阻率的数值计算[J]. 地球物理学报, 2003,46(5):697-704.
[17] Bai D H, Meju M A, Lu J, et al. Numerical calculation of all-time apparent resistivity for the central loop transient electromagneticmethod[J]. Chinese Journal of Geophysics, 2003,46(5):697-704.
[18] 严良俊, 胡文宝, 陈清礼, 等. 长偏移距瞬变电磁测深的全区视电阻率求取及快速反演方法[J]. 石油地球物理勘探, 1999,34(5):532-538.
[18] Yan L J, Hu W B, Chen Q L, et al. The estimation and fast inversion of all-time apparent resistivities in long-offset transient electromagnetic sounding[J]. OGP, 1999,34(5):532-538.
[19] Maxwell A M. A simple method of transient electromagnetic data analysis[J]. Geophysics, 1998,63(2):405-410.
[20] Anderson W L. Nonolinear least-squares inversion of transient soundings for central induction loop system (program NLSTCI)[R]. U.S.Geological Survey, 1982.
[21] 薛国强, 李貅, 郭文波, 等. 从瞬变电磁测深数据到平面电磁波场数据的等效转换[J]. 地球物理学报, 2006,49(5):1539-1545.
[21] Xue G Q, Li X, Guo W B, et al. Equivalent transformation from TEM field sounding data to plane-wave electromagnetic sounding data[J]. Chinese Journal of Geophysics, 2006,49(5):1539-1545.
[22] Nekut A G. Direct inversion of time-domain electromagnetic data[J]. Geophysics, 1987,52:1431-1435.
[23] 陈本池, 李金铭, 周凤桐. 瞬变电磁场拟波动方程偏移成像[J]. 石油地球物理勘探, 1999,34(5):546-554.
[23] Chen B C, Li J M, Zhou F T. Quasiwave equation migration of transient electromagnetic field[J]. Progress in Exploration Geophysic, 1999,34(5):546-554.
[24] 吕国印. 瞬变电磁法二维逆时偏移[J]. 物探与化探, 1998,22(2):139-142.
[24] Lu G Y. Two-dimensional counter-time shift in transient electromagnticmethod[J]. Geophysical and Geochemical Exploration, 1998,22(2):139-142.
[25] Zhou H W, Hu H, Zou Z H, et al. Reverse time migration: A prospect of seismic imaging methodology[J]. Earth-Science Reviews, 2018,179(2):207-227.
[1] 莫婉玲, 孙中华, 徐娅, 赵斌. 界面极化电压的外推法测量研究[J]. 物探与化探, 2017, 41(3): 484-488.
[2] 刘志臣, 吴发刚, 骆红星, 孙远彬, 周晓林, 陈登, 代璨怡. CSAMT法在贵州遵义锰矿整装勘查中的运用[J]. 物探与化探, 2016, 40(2): 342-348.
[3] 杨兴沐, 黄卓雄, 葛为中, 梁炳和, 高建东. 遥控电极阵列拓展高密度电阻率法勘探深度研究[J]. 物探与化探, 2016, 40(1): 73-77.
[4] 雷阳, 郗昭, 牛立群, 吕杰. 三分量大定源瞬变电磁勘探在新疆十红滩地区的应用[J]. 物探与化探, 2015, 39(4): 786-790.
[5] 张应文, 何建华, 代迪, 彭洪军, 马强, 代璨怡. 贵州山区大功率电法勘探中改善接地电阻的方法技术[J]. 物探与化探, 2013, 37(3): 517-520.
[6] 王国征, 郭俊良, 丁宪华.  和日金矿区激电法应用效果及找矿方向[J]. 物探与化探, 2010, 34(6): 800-805.
[7] 张前进, 杨进. 综合电法在深部隐伏矿体勘查中的应用实例[J]. 物探与化探, 2010, 34(1): 40-43.
[8] 杨湘生. 综合电法在黄花国际机场后勤基地找水中的应用[J]. 物探与化探, 2009, 33(4): 403-405.
[9] 王亚琳, 邹文勇, 裴磊. 复杂地质体中煤系地层的大地电磁测深法识别技术 ——以合肥盆地石炭二叠系煤系地层识别为例[J]. 物探与化探, 2008, 32(2): 159-162,167.
[10] 张林. 小回线瞬变电磁测深勘查铝土矿试验[J]. 物探与化探, 2007, 31(2): 124-128.
[11] 郑振云, 陈力子, 陈彩华. 寨上金矿区电法应用效果[J]. 物探与化探, 2007, 31(2): 133-137.
[12] 时晗. 从电法勘探资料分析宋楼煤矿主斜井突水因素[J]. 物探与化探, 2005, 29(2): 135-137.
[13] 杨进, 武炜. 地球物理方法在地质灾害勘查中的应用[J]. 物探与化探, 2003, 27(5): 333-337.
[14] 汤洪志, 刘庆成, 易峰. 电法勘探在水泥路面勘查中的应用效果[J]. 物探与化探, 2001, 25(1): 75-77.
[15] 李金铭. 电法勘探方法发展概况[J]. 物探与化探, 1996, 20(4): 250-258,249.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
京ICP备05055290号-3
版权所有 © 2021《物探与化探》编辑部
通讯地址:北京市学院路29号航遥中心 邮编:100083
电话:010-62060192;62060193 E-mail:whtbjb@sina.com