海水电阻率分层对海洋CSEM电磁响应的影响研究  

RESEARCH ON THE INFLUENCE ON SEA-WATER RESISTIVITY DELAMINATION FOR MARINE CSEM

作　　者：张益明 王堃鹏[2] 刘春成 祝忠明[3] 叶云飞 张兵[2] 

机构地区：[1]中海油研究总院,北京100027 [2]成都理工大学地球物理学院,四川成都610059 [3]成都理工大学信息科学与技术学院,四川成都610059

出　　处：《物探化探计算技术》2013年第4期442-445,372,共4页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家重大专项子课题(2011ZX05025-001-08)

摘　　要：海洋频率域可控源电磁法作为海底石油勘探一项新的技术手段,在深海油气勘探中已经取得许多成功的实例。但是,目前在海底地层电磁正演、反演技术中,很少考虑上部海水的电阻率分层对接收数据的影响。这里利用海洋电磁一维正演程序,研究了海水分层情况对理论数据的影响。通过比较分析,可以发现考虑海水电阻率分层对海洋电磁响应有较强的影响,因此,在实际海洋正反演过程中,海水电阻率层应该与地下地层一起参与反演解释,才能提高整体反演解释精度。Marine CSEM in frequency domain has gradually become a new technology way to explore the oil under sea.There are so many successful examples in deep sea area.However,the inversion of MCSEM rarely considers the influence of layers of sea water.This paper applies the 1D forward program to research the influence.Though the comparison and analysis,the sea-water layers has strongly influence on the MCSEM data.Therefore in real marine CSEM inversion,the resistivity of sea and sediment should be considered together to improve the result of the whole inversion.

关 键 词：深海 分层 一维 

分 类 号：P631.3[天文地球—地质矿产勘探]