Standard sesimic exploration only provides high success ratio in transient zones for shallow and seismically "bright" Senomanian deposits. Systematic trends in permafrost thickness damage structural maps transforming real anticlines into seismic structural noses. Non seismic methods must be added to improve understanding of hydrocarbon potential, especially in shallow water transient zones. DNME method of EM surveying provided a lot of geologically validated results. Surface geochemistry methodology allowing to minimize uncertainties and to predict new deposiits discussed. Integration of the technologies with seismic and geological data is considered as the main way to exploration success


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