Geology, geography and global energy
Scientific and Technical Journal
GEOECOLOGICAL EXPERIMENTAL EXCLUSIVE SLATE SLATE
2019. №4, pp. 232-245
Glebova Lyubov V. - Senior Lecturer, Lomonosov Moscow State University, 1 Leninskie Gory St., Moscow, 119234, Russian Federation, lvglebova@mail.ru
Li Wendong - undergraduate, Lomonosov Moscow State University, 1 Leninskie Gory St., Moscow, 119234, Russian Federation, liwendong928@qq.com
Xing Kai - undergraduate, Lomonosov Moscow State University, 1 Leninskie Gory St., Moscow, 119234, Russian Federation, 6yiyirichard@gmail.com
The study of shale objects is carried out in the laboratory and in practice with the use of special technologies, which increase the permeability of the productive horizon. Shale objects are a complex structure. The size of the pores of traditional sandstones and carbonate tanks ranges from 1 to 100 microns, while the pores of the matrix of shale objects are nanoscale from 1 to 200 nm. Nanopores are able to hold fluid, both in free form and in adsorbed. The amount of adsorbed in the slate is between 20-80 % of the total. Fluid movement mechanisms can be imagined as penetration, Knudsen diffusion and surface diffusion. Three mechanisms of movement are considered, it is viscous current, Knudsen diffusion and surface diffusion. The volume flow equations correspond to three motion mechanisms, and the apparent permeability is defined according to the Darcy formula equation. Mechanisms of movement interact with each other, so, ignoring the influence of other mechanisms, the volume consumption received separately, has a certain error. The seeming permeability obtained by the calculated way is also not accurate. The apparent permeability of shale objects is influenced by many factors, such as temperature, pressure, slate matrix pore radius, relative molecular mass of liquid, viscosity, compression factor and parameters associated with surface diffusion.
Key words: геоэкология, сланцевые объекты, нанопористость, диффузия Кнудсена, поры, поверхностная диффузия, низкопроницаемые породы, методы расчёта, неоднородность, факторы, оптимальный метод расчёта, анализ ошибок, кажущаяся проницаемость, geoecology, shale objects
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