三维重磁电震资料的联合解释——以库车大北地区山前砾石层为例
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摘要
库车拗陷山前带广泛分布砾岩体,严重影响地震资料深层的构造成像和解释精度。在库车大北地区开展的三维重磁电勘探工作,结合钻井、地震、地面露头资料,尝试采用多方法综合解决砾石层分布及岩性岩相变化。通过三维电法资料反演处理,实现了电法与地震资料同平台的联合解释,使综合解释由简单定性对比发展为联合精细描述,通过主干剖面的联合反演确定了不同层系的砾石层空间分布和砾岩岩性、岩相变化特征,为重新认识盐下构造,落实勘探目标及速度建模提供了依据。
In piedmont area of Kuche Depression,widely developed conglomerate masses seriously disturb seismic image and interpretation of deep structures.So integrated 3D gravity,magnetic and electromagnetic survey in the area was planned with the purpose of investigating conglomerate mass and its variation of lithology and lithofacies with the reference of logging data,seismic data and outcrops information.With improved approaches of data processing,3D EM data is integrated with seismic data on a united platform.This makes an integrated interpretation change from a simple qualitative comparison way to a more accurate study.A joint inversion on major sections gives the spatial distribution of conglomerate masses formed in different time.It provides bases for the investigation of subsalt structures,and velocity model building.
In piedmont area of Kuche Depression,widely developed conglomerate masses seriously disturb seismic image and interpretation of deep structures.So integrated 3D gravity,magnetic and electromagnetic survey in the area was planned with the purpose of investigating conglomerate mass and its variation of lithology and lithofacies with the reference of logging data,seismic data and outcrops information.With improved approaches of data processing,3D EM data is integrated with seismic data on a united platform.This makes an integrated interpretation change from a simple qualitative comparison way to a more accurate study.A joint inversion on major sections gives the spatial distribution of conglomerate masses formed in different time.It provides bases for the investigation of subsalt structures,and velocity model building.
引文
[1]王招明等.库车前陆盆地露头区油气地质.北京:石油工业出版社,2004
[2]韩小俊,韩波.塔里木盆地库车坳陷中部地震速度场的建立方法.天然气工业,2009,29(12):23～25Han Xiao-jun,Han Bo.A method of establishing thevelocity field in the central Kuqa Depression,Tarim-Basin.Natural Gas Industr,2009,29(12):23～25
[3]何展翔,刘云祥,刘雪军,孙卫斌,李德春,王永涛,郑莉.三维综合物化探一体化配套技术及应用效果.石油科技论坛,2008:49～54
[4]何展翔,陶德强,胡祖志.三维电磁勘探技术试验研究.第九届中国国际地球电磁学术讨论会论文集,2009,309～313
[5]王永涛,陈高,何展翔等.南方某碳酸盐岩裸露地区重磁电三维采集技术.中国石油勘探,2008,13(3):50～54Wang Yongtao,Chen Gao,He Zhanxiang et al.3DGravity-Magnetic-Electric data acquisition techniquesIn A Carbonate exposed area In South China.ChinaPetroleum Exploration,2008,13(3):50～54
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[7]陈清礼,胡文宝,李金铭等.利用地表电阻率校正大地电磁静态偏移.物探与化探,1999,23(4):289～295Chen Qingli,Hu Wenbao,Li Jinming et al.The ap-plication of surface resistivity to the correction ofmagnetotelluric static migration.Geophysical and Ge-ochemical Exploration,1999,23(4):289～295
[8]罗志琼.用电磁阵列法压制MT静态效应的研究.地球科学,1990,15(增刊):13～22Luo Zhiqiong.The study of attenuating static effectswith electromagnetic array profilng.Earth Science-Journal of China University of Geosciences,1990,15(Sup):13～22
[9]邵敏,何展翔,张立恩.二维中值滤波在电磁测深曲线去噪中的应用.物探化探计算技术,2001,23(3):226～231Shao Min,He Zhanxiang,Zhang Lien.The noiseelimination of electromagnetic sounding data using 2Dmid-value filtering.Computing Techniques for Geo-physical and Geochenical Exploration,2001,23(3):226～231
[10]Sternberg B K,Washburne J C,Pellerin L.Correc-tion for the static shift in magnetotellurics using tran-sient electromagnetic sounding.Geophysics,1988,53(11):967～978
[11]王家映.石油电法勘探.北京:石油工业出版社,1992
[12]何展翔.非地震勘探技术的进步与发展趋势.石油地球物理勘探,2000,35(3):354～360He Zhanxiang.Development tendency of non-seismicexploration techniques.OGP,2000,35(3):354～360
[13]胡祖志,胡祥云.大地电磁三维反演方法综述.地球物理学进展,2005,20(1):214～220Hu Zu-zhi,Hu Xiang-yun.Review of three dimen-sional magnetotelluric inversion methods.Progress inGeophysics,2005,20(1):214～220
[14]谭捍东,余钦范,Booker J等.大地电磁三维快速松弛反演.地球物理学报,2003,46(6):850～855Tan Handong,Yu Qinfan,Booker J et al.Three-di-mensional rapid relaxation inversion for the magneto-telluric method.Chinese Journal of Geophysics,2003,46(6):850～855
[15]胡祖志,胡祥云,何展翔.大地电磁非线性共轭梯度拟三维反演.地球物理学报,2006,49(4):1226～1234Hu Zuzhi,Hu Xiangyun,He Zhanxiang.Pseudo-three-Dimensional magnetotelluric inversion usingnonlinear conjugate gradients.Chinese Journal ofGeophysics,2006,49(4):1226～1234
[16]Sun Weibin,Deng Yuyou,Wang Caifu et al.Deepstructure study in complex area by 3DMT data.SEGTechnical Prograrn Expanded Abstracts,2007,26:683～687
[17]何展翔,黄卫宁,邵敏.用傅氏变换实现三维MT数据的插值.石油地球物理勘探,2003,38(5):561～564He Zhanxiang,Huang Weining and Shao ming.Usingdiscrete Fourier transform for interpolation of 3-DMT data.OGP,2003,38(5):561～564
[2]韩小俊,韩波.塔里木盆地库车坳陷中部地震速度场的建立方法.天然气工业,2009,29(12):23～25Han Xiao-jun,Han Bo.A method of establishing thevelocity field in the central Kuqa Depression,Tarim-Basin.Natural Gas Industr,2009,29(12):23～25
[3]何展翔,刘云祥,刘雪军,孙卫斌,李德春,王永涛,郑莉.三维综合物化探一体化配套技术及应用效果.石油科技论坛,2008:49～54
[4]何展翔,陶德强,胡祖志.三维电磁勘探技术试验研究.第九届中国国际地球电磁学术讨论会论文集,2009,309～313
[5]王永涛,陈高,何展翔等.南方某碳酸盐岩裸露地区重磁电三维采集技术.中国石油勘探,2008,13(3):50～54Wang Yongtao,Chen Gao,He Zhanxiang et al.3DGravity-Magnetic-Electric data acquisition techniquesIn A Carbonate exposed area In South China.ChinaPetroleum Exploration,2008,13(3):50～54
[6]Jones A G.Sfafic shift of magnetotelluric data and itsremoval in a sedimentary basin environment.Geo-physics,1988,53(7):967～978
[7]陈清礼,胡文宝,李金铭等.利用地表电阻率校正大地电磁静态偏移.物探与化探,1999,23(4):289～295Chen Qingli,Hu Wenbao,Li Jinming et al.The ap-plication of surface resistivity to the correction ofmagnetotelluric static migration.Geophysical and Ge-ochemical Exploration,1999,23(4):289～295
[8]罗志琼.用电磁阵列法压制MT静态效应的研究.地球科学,1990,15(增刊):13～22Luo Zhiqiong.The study of attenuating static effectswith electromagnetic array profilng.Earth Science-Journal of China University of Geosciences,1990,15(Sup):13～22
[9]邵敏,何展翔,张立恩.二维中值滤波在电磁测深曲线去噪中的应用.物探化探计算技术,2001,23(3):226～231Shao Min,He Zhanxiang,Zhang Lien.The noiseelimination of electromagnetic sounding data using 2Dmid-value filtering.Computing Techniques for Geo-physical and Geochenical Exploration,2001,23(3):226～231
[10]Sternberg B K,Washburne J C,Pellerin L.Correc-tion for the static shift in magnetotellurics using tran-sient electromagnetic sounding.Geophysics,1988,53(11):967～978
[11]王家映.石油电法勘探.北京:石油工业出版社,1992
[12]何展翔.非地震勘探技术的进步与发展趋势.石油地球物理勘探,2000,35(3):354～360He Zhanxiang.Development tendency of non-seismicexploration techniques.OGP,2000,35(3):354～360
[13]胡祖志,胡祥云.大地电磁三维反演方法综述.地球物理学进展,2005,20(1):214～220Hu Zu-zhi,Hu Xiang-yun.Review of three dimen-sional magnetotelluric inversion methods.Progress inGeophysics,2005,20(1):214～220
[14]谭捍东,余钦范,Booker J等.大地电磁三维快速松弛反演.地球物理学报,2003,46(6):850～855Tan Handong,Yu Qinfan,Booker J et al.Three-di-mensional rapid relaxation inversion for the magneto-telluric method.Chinese Journal of Geophysics,2003,46(6):850～855
[15]胡祖志,胡祥云,何展翔.大地电磁非线性共轭梯度拟三维反演.地球物理学报,2006,49(4):1226～1234Hu Zuzhi,Hu Xiangyun,He Zhanxiang.Pseudo-three-Dimensional magnetotelluric inversion usingnonlinear conjugate gradients.Chinese Journal ofGeophysics,2006,49(4):1226～1234
[16]Sun Weibin,Deng Yuyou,Wang Caifu et al.Deepstructure study in complex area by 3DMT data.SEGTechnical Prograrn Expanded Abstracts,2007,26:683～687
[17]何展翔,黄卫宁,邵敏.用傅氏变换实现三维MT数据的插值.石油地球物理勘探,2003,38(5):561～564He Zhanxiang,Huang Weining and Shao ming.Usingdiscrete Fourier transform for interpolation of 3-DMT data.OGP,2003,38(5):561～564
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