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《应用地球物理(英文版)》 2008-03
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Application of 2.5D cross-hole electromagnetic inversion in Gudao Oil Field,East China

Shen Jinsong~(1,2) Sun Wenbo~1 Zhao Wenjie~3 Zeng Wenchong~3 1.Geophysical Department,Faculty of Resources and Informatics,China University of Petroleum(Beijing),Beijing 102249,China. 2.State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum(Beijing),Beijing 102249,China. 3.SINOPEC Shengli Oilfield Well Logging Company,Dongying,257001,China.  
In this study,we present a practical technique of transforming cross-hole EM data into the inter-well resistivity distribution.The a priori information constraint is incorporated into an iterative regularized inversion procedure and a variable roughness is added into the inversion process.Finite element approximation based on a two and a half-dimensional (2.5D)model has been developed for the forward problem and the"pseudo-forward"problem needed for constructing the sensitivity matrix and synthetic data set.The regularized least-squares inversion scheme,constrained with the a priori information obtained from well logs,was adopted to reconstruct the inter-well resistivity profile from two synthetic electromagnetic data sets and field data acquired in the Gudao Oil Field,East China.The partial derivatives of the sensitivity matrix were computed by the adjoint equation based on the reciprocity principle.Inversion results of the synthetic and field data examples suggest that our method is robust and stable in the presence of random noise in the field data and can be used for cross-hole EM field data interpretation.
【CateGory Index】: P631.325
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1 Li Jinghe1,2,He Zhanxiang2,Lü Yuzeng1,Kong Yali2(1.College of Earth Science,Guilin University Technology,Guilin Guangxi 541004,China;2.Nonseismic Survey East Geophysical Company,Zhuozhou Hebei 072751,China);A Review of Wellhole Electromagnetic Exploration Technology and the Status of Numerical Simulation[J];Chinese Journal of Engineering Geophysics;2011-03
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1 KE Ganpan,HUANG Qinghua Department of Geophysics,School of Earth and Space Sciences,Peking University,Beijing 100871;;3D Forward and Inversion Problems of Borehole-to-Surface Electrical Method[J];Acta Scientiarum Naturalium Universitatis Pekinensis;2009-02
2 Wang Zhigang1· 2, He Zhanxiang1, and Wei Wenbo21. East Geophysical Company, Zhuozhou 072751, China. 2. China University of Geosciences, Beijing,100083, China.;3D Modeling and Born approximation inversion for the borehole surface electromagnetic method[J];应用地球物理(英文版);2007-02
3 Shen Jinsong.;Calculating Multi-frequency Electromagnetic Logging Responses with Vertical Eigenstate Method.[J];Well Logging Technology;2002-05
4 SHEN Jin-song~(1,2) SUN Wen-bo~1 1.Geophysical Department,Faculty of Resources and Informatics,China Petroleum University,Beijing 102249,China 2.CNPC Key Lab of Geophysical Exploration,China Petroleum University,Beijing 102249,China;Tomography of the Cross-Hole Electromagnetic Measurements[J];Computerized Tomography Theory and Applications;2008-01
5 WANG Zhi-gang1,2,HE Zhan-xiang1,WEI Wen-bo2(1.Department of East Geophysical Company,Zhuozhou 072751,China;2.China University of Geosciences,Beijing 100083,China);Fast 3D inversion of borehole ground electrical method data based on born approximation[J];Progress in Geophysics;2007-02
6 SHEN Jin-song1,2,SUN Wen-bo1(1.Faculty of Resources and Informatics,China Petroleum University,Beijing 102249,China2.CNPC Key Lab of Geophysical Exploration,China Petroleum University,Beijing 102249,China);Numerical analysis of the electromagnetic logging responses in metal casing pipe[J];Progress in Geophysics;2007-06
7 WANG Zhi-gang1,HE Zhan-xiang1,WEI Wen-bo2(1.Department of East Geophysical Company,Zhuozhou 0727511,China;2.China University of Geosciences,Beijing 100083,China);Research on 3D modeling of borehole vertical bipole using body integral equation[J];Progress in Geophysics;2007-06
8 YANG Xi,PAN He-ping(Institute of Geophysics and Geomatics,China University of Geosciences,Wuhan 430074,China);The simulation of cross-hole electromagnetic fields using FDTD method[J];Progress in Geophysics;2008-02
9 WEI BAO JUN\ ZHANG GENG JI (Department of Applied Physics, University of Petroleum, Dongying 257061, China);FORWARD MODELLING AND INVERSION OF 3-D CROSS-HOLE ELECTROMAGNETIC FIELDS[J];Chinese Journal of Geophysics;2002-05
10 WEI Bao-JunFaculty of Physical Science and Technology, China University of Petroleum, Dongying 257061, China;A combined 1-D/2-D inversion algorithm of cross-hole electromagnetic fields[J];Chinese Journal of Geophysics;2006-01
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