KEY SECTION OF THE PREOBRAZHENKA PRODUCTIVE HORIZON IN THE VENDIAN-LOWER CAMBRIAN CARBONATE COMPLEX ( Lena-Tunguska petroliferous province )
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a A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia
b Siberian Research Institute of Geology, Geophysics and Mineral Resources, Krasnyi pr. 67, Novosibirsk, 630091, Russia
c Irkutskgeofizika Federal State Geological Enterprise, ul. Gor'kogo 8, Irkutsk, 664025, Russia
d A.P. Karpinsky All-Russian Research Geological Institute, Srednii pr. 74, St. Petersburg, 199106, Russia
Keywords: Key section, horizon, core, lithology, genetic types, postsedimentation processes, geochemistry, oil saturation, well logging, porosity, permeability, petrophysics, rock density, velocity of elastic waves, radioactivity
Pages: 175-184
Subsection: OIL AND GAS GEOLOGY
Abstract
We present results of lithofacies, reservoir, geochemical, well logging, and petrophysical studies of the key section of the Vendian-Lower Cambrian Preobrazhenka productive horizon in the Lena-Tunguska province. We have considered the composition, structure, and formation conditions of the deposits as well as the intensity of postsedimentation processes and the rock geochemistry, petrophysics, and reservoir properties.
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