Influence of IP effects on marine controlled-source electromagnetic responses
(2.Key Laboratory of Submarine Geosciences and Prospecting Techniques of Ministry of Education, Qingdao, Shandong, China 266100)
【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 the IP effects depend on IP parameters, observing frequency and reservoir thickness. The IP effects may lead higher reservoir resistivity, whereas this deviation is not very significant.
【Keywords】 marine controlled-source electromagnetic (MCSEM) ; IP effects; Cole-Cole model; IP strength;
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