PROSPECTS FOR FINDING NATURAL HYDROGEN DEPOSITS IN NORTHEASTERN RUSSIA (by the EXAMPLE of THE 3-DV REFERENCE PROFILE)
M.I. Epov, E.A. Melnik, A.S. Salnikov
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Natural hydrogen, lithospheric plates, Siberian platform and its folded framing, faults, migration paths, deep traps, multiscale geological and geophysical data, seismic modeling, gas geochemical survey, modern computational technologies.
Abstract
The use of hydrogen as an environmentally friendly energy carrier is recognized by many countries, including Russia. For these reasons, the problem of searching for natural hydrogen accumulations formed as a result of natural processes in the Earth's interior is extremely urgent and scientifically significant. The current lack of a coherent classification of diagnostic features for hydrogen potential, considering the specifics of generation and accumulation in various geological and tectonic settings, prioritizes the development of new exploration approaches. These approaches include the integration of geological, geophysical, and geochemical methods together with modern technologies for processing the entire data array. Such diverse materials have been obtained over the past 20 years through regional geological and geophysical reference profiles carried out by the Federal Agency for Mineral Resources, which cross heterogeneous blocks of Northeastern Eurasia. One of these is the 3-DV reference profile (Skovorodino village – Shelikhov Gulf), stretching approximately 2,900 km across the structural elements that define the modern geodynamics of Central Asia: the Eurasian, Amur, and Okhotsk Sea lithospheric plates. This article analyzes the distribution of hydrogen and other deep-seated gases accumulated in the subsoil layer along the Southern section of the 3-DV reference profile. The aim of this work is to identify areas with their anomalous concentrations and to study the features of the deep structure (down to the upper mantle) of such zones to form a set of diagnostic criteria for assessing the hydrogen potential of various territories.
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