| 海洋电磁法勘探油气的三维正演模拟 |
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| 引用本文： | 雷林林,刘四新,傅磊,孟旭.海洋电磁法勘探油气的三维正演模拟[J].世界地质,2012,31(4):797-802. |
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| 作者姓名： | 雷林林 刘四新 傅磊 孟旭 |
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| 作者单位： | 吉林大学地球探测科学与技术学院，长春130026 |
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| 摘 要： | 针对海底可控源电磁法( MCSEM) 在油气资源勘探中的实用性，应用矢量有限元进行了多种频率的水平电偶源发射电磁场识别油气层的实例研究，并利用矢量有限元对海底的3D 模型进行了正演数值模拟。利用MCSEM 能较好地识别油气层; 归一化后的电场曲线特征表明，浅海下不易测得油气层，在实验频率内，电场源频率越高对油气层识别能力越强。同时证实了MCSEM 识别油气层是建立在波导理论基础上的。
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| 关 键 词： | 矢量有限元 海底可控源电磁法( MCSEM) 油气层 波导 正演模拟 |
Three-dimensional forward simulation of seabed oil and gas exploration |
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| LEI Lin-lin
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LIU Si-xin
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FU Lei
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MENG Xu.Three-dimensional forward simulation of seabed oil and gas exploration[J].World Geology,2012,31(4):797-802. |
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| Authors: | LEI Lin-lin LIU Si-xin FU Lei MENG Xu |
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| Institution: | College of Geo-exploration Science ＆ Technology，Jilin University，Changchun 130026，China |
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| Abstract: | We studied the feasibility of frequency domain submarine electromagnetic method in the exploration of oil and gas． In order to distinguish the spatial reservoir filled with hydrocarbon，we established three-dimensional seabed models with a horizontal electric-dipole source． With numeric forward simulation of models by vector finite element method，it shows that: the MCSEM can well identify hydrocarbon layers; while it is difficult to recognize reservoir in the shallow water which was concluded by the normalized amplitudes of deep water and shallow water; and with higher frequency，the identifiying ability will be better within experiment frequencies． The results prove that the identification of hydrocarbon layers by the MCSEM was established on the basis of the theoretical guided wave． |
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| Keywords: | Vector FEM MCSEM hydrocarbon layers guided wave forward simulation |
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