Geology, geography and global energy

Scientific and Technical Journal


2020. №2, pp. 33-36

Sungatullina Nigina V. - Lomonosov Moscow State University,

Lower deposits of sandstone in Western Siberia have a regional distribution, and are characterized by various filtration - capacity properties, which are caused by genesis and content of aluminosilicate impurities (zeolits). Having considered a number of characteristic features of the lower sandstone with different capacitive properties, it was necessary to conduct a large number of studies of the core material, which is especially relevant for rocks that are regional collectors, as the stretch of the reservoir and the composition of rocks directly affects the properties of the objects studied. The productive lower - grown sediments of Western Siberia are represented by fine - grained sandstones formed at the diagenesis stage as a result of the conversion of pyroclastic or other silicate material. The regional stretch of sandstones with zeolits was mapped from the Polar deposit to the south in a meridional direction to the Upper Colik - Yegan section. The boundaries of the stretch of sandstone with zeolits in Western Siberia have been clarified according to the evidence. In the course of the study of the core material, it was found that impurities are able to fill large pores and channels in the most permeable part of the regional reservoir, thereby degrading the structure of the pore space, thus having a negative impact on the development of hydrocarbon deposits. The main task is to identify highly permeable zones in the regional sediments of the lower sandstones of Western Siberia.

Key words: региональное распространение, отложения песчаника, Западно - Сибирский нефтегазоносный бассейн, региональные исследования, выявление высокопроницаемых зон, коллекторские свойства, песчаники нижнемелового возраста, фильтрационно-емкостные свойства, региона