SOTEM探测技术专利发布
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- 论文作者：薛国强 ; 闫述 ; 陈卫营
- 年：2016
- 作者机构：中国科学院地质与地球物理研究所;江苏大学;
- 论文关键词：瞬变电磁 ; 接地源 ; 短偏移 ; 深部探矿
- 会议召开时间：2016-10-15
- 会议录名称：2016中国地球科学联合学术年会论文集（四十）——专题82：地球物理科技成果推广平台、专题83：东亚大陆边缘-西太平洋构造地质过程（中国海陆地学系列图编制）
- 语种：中文
- 分类号：P631.325
- 学会代码：ZGDW
- 会议名称：2016中国地球科学联合学术年会
- 会议地点：中国北京
- 主办单位：中国地球物理学会、中国地震学会、全国岩石学与地球动力学研讨会组委会、中国地质学会构造地质学与地球动力学专业委员会、中国地质学会区域地质与成矿专业委员会
- 学会名称：中国地球物理学会
- 页数：2
- 文件大小：1114k
- 原文格式：D
- 会议级别：全国
摘要
近年来,时域瞬变场的这一装置和方法再次引起关注,并显示出了良好的应用前景。Alumbaugh(2002)提出采用近源瞬变电磁法对高阻目标体进行探测,Nestor(2009)认为近区探测具有可行性。Ziolkowski(2010)申报接地源近场瞬变电磁法发明专利。电性源瞬变电磁法的装备和软件开发得到越来越多的投入。对于深部目标探测来说,接地导线源瞬变电磁法可以在近场观测并获得较大的探测深度,比CSAMT和LOTEM具有相对较高的探测精度,是非常有意义的研究.作者把这种电性源近场瞬变电磁探测按观测点到源点距离范围,定义为短偏移瞬变电磁法(short-offset TEM,并简称为SOTEM),和与LOTEM定义不同,SOTEM是指场点到源点距离与探测深度大致相当或者略小于探测深度的观测装置.另外,很明显,在崎岖山区,长导线的布设比大回线有较多的灵活性和方便性.开展该装置下的技术突破性研究对于深部矿体的精细探测具有重要意义.研究表明,采用小偏移距测量,可以克服以往长偏移距瞬变电磁法(LOTEM)信号较弱的缺点,具有对地层断面以及对有限导体的探测能力强,附加效应小和探测深度大等优点。在山区进行勘探时,布置导线就比布置回线方便的多,导线布设的位置要求相对不严格,导线可以布置在测区内山沟的人行小道上或者易于通行穿越的地方,这样工作效率会极大地提高。该方法不仅可以实现对地下分析分辨单元的多次覆盖测量,还可以实现瞬变电磁的三维立体探测及快速扫面。可以获得更精确的地下目标体的位置、大小和形状的信息,对于研究精细地质结构有重要意义。SOTEM这种探测装置及方法系统,为时域电磁法深部探矿提供了新的突破点。研究认为接地线源短偏移瞬变电磁法是一种值得推广的方法。
引文
Spies B R.Depth of investigation in electromagnetic sounding methods[J].Geophysics,1989,54(7):872~888
Strack K M.Exploration with deep transient electromagnetic method[M].Elsevier,1992.
Hordt A,Muller M.Understanding LOTEM data from mountainous terrain[J].Geophysics,2000,65(4):1113~1123.
Horad A,Scholl C.The effect of local distortions on time-domain electromagnetic measurements[J].Geophysics,2004,69(1):87~96.
Haber E,Ascher U M,Oldenburg D W.Inversion of 3D electromagnetic data in frequency and time-domain using an inexact all-at-one approach[J].Geophysics,2004,69(5):1216~1228.
Commer M,Newman G.A parallel finite-difference approach for 3D transient electromagnetic modeling with galvanic source[J],Geophysics,2004,69(5):1192~1202.
Babajanov T L,Kim G B,Yuldashev G Y,et al.Interpretation of 3-D MT survey data in the southeastern BukharoKhivinsky oil and gas prospective region of Uzbekistan[C].SEG Expanded Abstracts 30,2011:776~780.
Martin R.Development and application of 2D and 3D transient electromagnetic inverse solutions based on a djoint Green functions:A feasibility study for the spatial reconstruction of conductivity distributions by means of sensitivities[D].Universit?t zu K?ln,2009.
Alumbaugh,Research proposal on 3D numerical analysis of the Grounded Electric Source,Transient Electromagnetic Geophysical Method[M].2002.
Nestor H.Cuevas,and David Alumbaugh,Near source response of a resistive layer to vertical electrical dipole excitation,2009,SEG annual meeting expanded abstract 794~798.
Cuevas N H,Alumbaugh D.Near source response of a resistive layer to vertical electric dipole excitation[C].SEG Houston2009 International Exposition and Annual meeting,2009:794~798.
Ziolkowski,Short-offset transient electromagnetic geophysical survey[P].United State Patent Application Publication,Aug12,2010.
薛国强,陈卫营,周楠楠,等.接地源瞬变电磁短偏移深部探测技术[J].地球物理学报,2013,56(1):255~261.
Strack K M.Exploration with deep transient electromagnetic method[M].Elsevier,1992.
Hordt A,Muller M.Understanding LOTEM data from mountainous terrain[J].Geophysics,2000,65(4):1113~1123.
Horad A,Scholl C.The effect of local distortions on time-domain electromagnetic measurements[J].Geophysics,2004,69(1):87~96.
Haber E,Ascher U M,Oldenburg D W.Inversion of 3D electromagnetic data in frequency and time-domain using an inexact all-at-one approach[J].Geophysics,2004,69(5):1216~1228.
Commer M,Newman G.A parallel finite-difference approach for 3D transient electromagnetic modeling with galvanic source[J],Geophysics,2004,69(5):1192~1202.
Babajanov T L,Kim G B,Yuldashev G Y,et al.Interpretation of 3-D MT survey data in the southeastern BukharoKhivinsky oil and gas prospective region of Uzbekistan[C].SEG Expanded Abstracts 30,2011:776~780.
Martin R.Development and application of 2D and 3D transient electromagnetic inverse solutions based on a djoint Green functions:A feasibility study for the spatial reconstruction of conductivity distributions by means of sensitivities[D].Universit?t zu K?ln,2009.
Alumbaugh,Research proposal on 3D numerical analysis of the Grounded Electric Source,Transient Electromagnetic Geophysical Method[M].2002.
Nestor H.Cuevas,and David Alumbaugh,Near source response of a resistive layer to vertical electrical dipole excitation,2009,SEG annual meeting expanded abstract 794~798.
Cuevas N H,Alumbaugh D.Near source response of a resistive layer to vertical electric dipole excitation[C].SEG Houston2009 International Exposition and Annual meeting,2009:794~798.
Ziolkowski,Short-offset transient electromagnetic geophysical survey[P].United State Patent Application Publication,Aug12,2010.
薛国强,陈卫营,周楠楠,等.接地源瞬变电磁短偏移深部探测技术[J].地球物理学报,2013,56(1):255~261.