TEM拟地震成像法在漠河地区探测永久冻土层的应用
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摘要
利用瞬变电磁法(TEM)研究永久冻土层的分布规律,为中国东北天然气水合物远景调查的进一步研究提供依据。采用拟地震成像法反演瞬变电磁法野外数据,有效地划分出反射界面和电性层位,成功地推断出漠河地区永久冻土层的分布。反演结果表明,漠河SN(2)测线永久冻土发育良好,厚度较大,且具有一定的连续性,与直流电测深法揭示的结果相一致。
TEM method is used to study the space distribution regularity of permafrost strata in order to offer the base for further research of the northeast natural gas hydrate prospective investigation.This method gets better geological result by using pseudo-seismic interpretation imaging technology to inverse TEM field data to divide the reflect interface and electric level and then inferred the distribution of permafrost strata of Mohe region successfully.The inverse result shows that the permafrost strata of the south-north second measurement line developed well with large thickness,had certain continuity,and was consistent with the result of VES.
TEM method is used to study the space distribution regularity of permafrost strata in order to offer the base for further research of the northeast natural gas hydrate prospective investigation.This method gets better geological result by using pseudo-seismic interpretation imaging technology to inverse TEM field data to divide the reflect interface and electric level and then inferred the distribution of permafrost strata of Mohe region successfully.The inverse result shows that the permafrost strata of the south-north second measurement line developed well with large thickness,had certain continuity,and was consistent with the result of VES.
引文
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[3]Zhu Y,Rao Z,Wu B.Organic and gas geochemistryof gas hydrate-bearing sediments from Mallik 5 L-3 8production research well[J].Mackenzie Delta,CanadaGeological Survey of Canada Bulletin,6 8(2):3 1 1-3 1 9.
[4]周幼吾,郭东信,邱国庆.中国冻土[M].北京:地质出版社,2000:40-62.ZHOU You-wu,GUO Dong-xin,QIU Guo-qing.Chinapermafrost[M].Beijing:Geological Publishing House,2000:40-62.
[5]苏朱刘,胡文宝.中心回线方式瞬变电磁测深虚拟全区视电阻率和一维反演方法[J].石油物探,2002,41(2):216-221.SU Zhu-liu,HU Wen-bao.Pseudo-full-region apparentresistivity and its one-dimensional inversion for center-loop-line configuration TEM data[J].GeophysicalProspecting For Petroleum,2002,41(2):216-221.
[6]蒋邦远.磁源TEM测深一维反演经验式及应用效果[J].物探与化探,2000,24(2):99-104.JIANG Bang-yuan.A rapid 1-D empirical inversionformula and its application results in TEM sounding[J].Geophysical and Geochemical Exploration,2000,24(2):99-104.
[7]杨长福,林长佑,陈军营,等.三维瞬变电磁近似反演[J].地震学报,2000,22(4):377-384.YANG Chang-fu,LIN Chang-you,CHEN Jun-ying,etal.3-D approximate inversion for transient electromag-netic soundings[J].Acta Seismologica Sinica,2000,22(4):377-384.
[8]李创社,张彦鹏,李实,等.瞬变电磁勘探中的人工神经网络反演法[J].西安交通大学学报,2001,35(6):604-607.LI Chuang-she,ZHANG Yan-peng,LI Shi,et al.Newinversion method of artificial neural network in tran-sient electromagnetic inversion[J].Journal of Xi’anJiaotong University,2001,35(6):604-607.
[9]熊彬.大回线瞬变电磁法全区视电阻率的逆样条插值计算[J].吉林大学学报(地球科学版),2005,35(4):515-519.XIONG Bin.Inverse spline interpolation for the calcu-lation of all-time resistivity for the large-loop transientelectromagnetic method[J].Journal of Jilin University(Earth Science Edition),2005,35(4):515-519.
[10]薛国强,李貅.从瞬变电磁电性剖面到拟地震剖面的转换[J].石油地球物理勘探,2003,38(4):444-446.XUE Guo-qiang,LI Xiu.Transform from transientelectro-magnetic(TEM)electric section into pseudo-seismic section[J].Oil Geophysical Prospecting,2003,38(4):444-446.
[11]李貅,郭文波.瞬变电磁测深快速拟地震解释方法及应用效果[J].西安工程学院学报,2001,23(3):42-45.LI Xiu,GUO Wen-bo.The method and applicationeffects of pseudo-seismic interpretation of TEM[J].Journal of Xi’an Engineering University,2001,23(3):42-45.
[12]刘继东,林长佑,杨长福.瞬变电磁资料反演解释方法[M].兰州:兰州大学出版社,2001:115-137.LIU Ji-dong,LIN Chang-you,YANG Chang-fu.Method of TEM inversion and explaination[M].Lanzhou:Lanzhou University Press,2001:115-137.
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