Offshore hydrocarbon deposits
Section editor – PhD in geology and mineralogy Suprunenko О.I.
Article # 17_2018 submitted on 03/27/2018 displayed on website on 05/31/2018
30 p.
pdf  Geophysical and lithological-geochemical requirements of oil and gas industry of the deep and shelf basins of the Russian Eastern Arctic
In the Aptian-Cenozoic study of each of the sedimentary basins in the eastern Arctic, five identically dated seismic-stratigraphic complexes have been identified reflecting the relationship of the rift systems of the eastern Arctic shelves and the deep-water basins of the Central Arctic region. Lithological composition and thickness of deposits, types and thermal maturity of organic matter were reconstructed. The reconstruction is based on data from seismic profiling, underwater drilling, and study of bottom sediment samples, seismic velocity analysis and assessment of oil and gas prospects of the neighboring Arctic shelf. At the present stage, generation and accumulation capabilities are characteristic mainly of the Upper Cretaceous and Cenozoic fluidodynamic systems of the sedimentary cover. The Paleozoic-Mesozoic rocks of the acoustic basement (in the absence of catagenetic unconformity at its boundary) serve as a secondary source of hydrocarbons entering the fractures of the fault zones into the sedimentary cover of the basins. The shelf North Chukchi and the shelf-slope of the Fore-Eastern Siberian basins are the most promising in the oil and gas bearing respect, the productivity of which is predicted in a wide range, basins which also extends to great depths. Large oil and gas and gas accumulations can be discovered on the slopes and horst elevations of the basins. The relatively shallow occurrence of Lower Mesozoic and Upper Paleozoic formations on the southern slope of the North Chukchi Basin makes this region particularly attractive as oil and gas prospect. In the deep-water basins belonging to the high-latitude Arctic, potentially oil-and-gas bearing targets are assumed in areas adjacent to the major basement uplifts, which separates the large basins from the small basins of the foot of the slopes of the Lomonosov and Mendeleev Ridges.

Keywords: seismostratigraphic sections, oil and gas reservoirs, catagenetic maturity of organic matter, fluid dynamic systems, centre of oil and gas formation, potentially oil and gas bearing targets, Russian Eastern Arctic.
article citation Polyakova I.D., Borukaev G.Ch. Geofizicheskie i litologo-geokhimicheskie predposylki neftegazonosnosti glubokovodnykh i shel'fovykh basseynov rossiyskoy vostochnoy Arktiki [Geophysical and lithological-geochemical requirements of oil and gas industry of the deep and shelf basins of the Russian Eastern Arctic]. Neftegazovaya Geologiya. Teoriya I Praktika, 2018, vol. 13, no. 2, available at: http://www.ngtp.ru/rub/5/17_2018.pdf
DOI https://doi.org/10.17353/2070-5379/17_2018
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