Равновесные условия и кинетика гидратообразования природного газа в глинистых грунтах Мархинского месторождения = Equilibrium conditions and kinetics of natural gas hydrate formationin the clay soils of the Markhinskiy deposit
Статья в журнале
Русский
622.691:622.279.72(571.56)
https://doi.org/10.31242/2618-9712-2025-30-2-177-185
природный газ; гидрат; глины; Р–Т-условия образования гидратов; термический анализ; кинетические характеристики гидратообразования; natural gas; hydrate; clays; P–T-conditions of the hydrate formation; thermal analysis; kinetic characteristics of the hydrate formation
Subpermafrost aquifers are distinguished by their low stratum temperatures and pressures that approximate conventional hydrostatic pressures, rendering them suitable geological formations for the organization of underground gas storage facilities in a hydrate state. The design of such facilities requires the execution of experimental studies focused on hydrate formation within porous media. This paper examines the subpermafrost aquifers located in the Vilyui syneclise, where the hydrate stability zone covers Cretaceous and Jurassic deposits, specifically terrigenous-clayey strata. The mineralogical and granulometric composition, density, porosity, and moisture content, along with the presence of clays in the porous medium, influence the conditions conducive to hydrate formation. Therefore, the investigation of hydrate formation in clayey soils is a critical component that will support the development of underground gas storage facilities. To analyze the thermobaric conditions associated with hydrate formation, the method of differential thermal analysis was employed. The samples of porous media comprised clayey soils with varying moisture content, ranging from 15% to 40%. The results indicate that in soils with a moisture content of 20% or greater, a mechanical mixture of hydrates consisting of nearly pure methane and gases with higher molecular weights is produced. Additionally, it was observed that an increase in the moisture content of clay soils correlates with a decrease in the kinetic characteristics of hydrate formation. Based on the conducted research, it can be concluded that porous media characterized by clay layers with minimal moisture content are optimal for the establishment of underground gas storage facilities in a hydrated state
Иванова И. К., Калачева Л. П., Портнягин А. С., Бубнова А. Р., Иванов В. К., Лукина Ю. В., Александров А. Р.
Равновесные условия и кинетика гидратообразования природного газа в глинистых грунтах Мархинского месторождения // Природные ресурсы Арктики и Субарктики. 2025; 30(2): 177-185. https://doi.org/10.31242/2618-9712-2025-30-2-177-185
DOI: https://doi.org/10.31242/2618-9712-2025-30-2-177-185
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