Keyword: «natural gas»

In a computational experiment, the analysis of the influence of taking into account the dependence of the equilibrium conditions of hydrate formation on the reservoir waters mineralization type on the formation of hydrates in wells during natural gas production was carried out. The study was carried out within the framework of the model of joint operation of the system "reservoir – well" during its thermal interaction with surrounding rocks. The dynamics of changes in temperature, pressure, moisture content of gas and flow section in wells are predicted. It was found that when taking into account the mineralization of reservoir waters, the time interval from the moment of starting wells to the their complete blockage with hydrates increases.

This paper analyzes gas hydrate technologies for supplying gas to the Arctic regions of the Republic of Sakha (Yakutia). An experimental study of the hydrates formation and decomposition in bulk water and salt solutions of different concentrations demonstrated the feasibility of using gas hydrate technology for the accumulation, storage, and transportation of natural gas under the region's climatic conditions and existing transport infrastructure. Experiments demonstrated the concentration of C2-C4 hydrocarbons in the hydrate phase during hydrate formation in salt solutions, leading to an increase in the fat content and calorific value of the original gas. It is shown that the cold climatic conditions of the Arctic regions of the Republic of Sakha (Yakutia) allow to use gas hydrates as an additional energy source.