Influence of IP effects on marine controlled-source electromagnetic responses
Ding Xuezhen1, Li Yuguo1,2, Liu Ying1,2
1. College of Marine Geosciences, Ocean University of China, Qingdao, Shandong 266100, China; 2. Key Laboratory of Submarine Geosciences and Prospecting Techniques of Ministry of Education, Qingdao, Shandong 266100, China
Abstract：In the numerical simulation and interpretation of marine controlled-source electromagnetic (MCSEM) datasets,IP effects are usually ignored.In this paper,we study the IP influences on the 1D and 2D MCSEM modeling responses based on the Cole-Cole model.A new parameter-IP strength is defined for evaluating the strength of IP effects.We introduce the influence of IP effects on 1D MCSEM inversion.Numerical results suggest that IP effects depend on polarization parameters,observing frequency and reservoir thickness.IP effects may lead higher reservoir resistivity,however this deviation is not very significant.
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