The mathematical model of the gas hydrate deposit development in permafrost

Мусакаев, Н. Г.; Хасанов, М. К.; Borodin, S. L.

doi:10.1016/j.ijheatmasstransfer.2017.10.127

Cited by 87 publications

(16 citation statements)

References 21 publications

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“…The system of Equations (23)- (29) with the boundary and initial conditions in Equation (30) was solved by the finite difference method. Table 1 [11,16,19,39,54]. Note that the temperature fields in a reservoir will largely depend on the porous reservoir material, since it affects the values of thermal conductivity and specific volumetric heat capacity.…”

Section: Description Of the Ch 4 -Co 2 Replacement Kinetics In The Hymentioning

confidence: 99%

“…There are several main methods of methane recovery from a methane hydrate deposit: lowering the pressure and increasing the temperature of the deposit to the point of the hydrate decomposition, and injecting organic or brine solutions that promote the gas hydrate dissociation [1][2][3][4]. The mathematical modeling of the development of gas hydrate deposits using these methods is considered in [5][6][7][8][9][10][11]. The reduction of atmospheric emissions of carbon dioxide is very important in reducing the anthropogenic impact on climate.…”

Section: Introductionmentioning

confidence: 99%

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Mathematical Model of Carbon Dioxide Injection into a Porous Reservoir Saturated with Methane and Its Gas Hydrate

2020

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In this paper, the process of methane replacement in gas hydrate with carbon dioxide during CO2 injection into a porous medium is studied. A model that takes into account both the heat and mass transfer in a porous medium and the diffusion kinetics of the replacement process is constructed. The influences of the diffusion coefficient, the permeability and extent of a reservoir on the time of full gas replacement in the hydrate are analyzed. It was established that at high values of the diffusion coefficient in hydrate, low values of the reservoir permeability, and with the growth of the reservoir length, the process of the CH4-CO2 replacement in CH4 hydrate will take place in the frontal regime and be limited, generally, by the filtration mass transfer. Otherwise, the replacement will limited by the diffusion of gas in the hydrate.

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Section: Description Of the Ch 4 -Co 2 Replacement Kinetics In The Hymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mathematical Model of Carbon Dioxide Injection into a Porous Reservoir Saturated with Methane and Its Gas Hydrate

2020

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“…Figure 2 shows the temperature distribution in a reservoir at 10 h after the start of methane injection. The original parameters used in the model are shown in Table 1 [3,19,26,[29][30][31]: Figure 2 shows that the temperature in a small section of the reservoir near the surface of the CH4 hydrate formation sharply rose from Tw to T(s) (i.e., we can talk about a temperature jump [23]). In this case, to obtain an approximate analytical solution, it is possible to simplify the conditions at the phase transition boundary by adopting a stepwise change in the temperature by coordinate r.…”

Section: Mathematical Modeling Of the Process Of Gas Hydrate Formatiomentioning

confidence: 99%

Solution of the Problem of Natural Gas Storages Creating in Gas Hydrate State in Porous Reservoirs

Мусакаев

Хасанов

2020

Mathematics

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Underground gas hydrate storage of natural gas is a rather promising way of creating underground storage facilities for hydrocarbon raw materials in porous reservoirs. This paper presents a solution to the problem of the formation of CH4 hydrate in a porous medium during the injection of methane into a reservoir at a temperature lower than the initial temperature of the reservoir. Self-similar solutions of the problem in axisymmetric approximation are given, describing the pressure and temperature distribution in separate reservoir regions at the formation of gas hydrate on the frontal surface. On the basis of the method of sequential change of stationary states, an analytical solution was obtained, which allowed us to determine the position of the methane hydrate formation boundary depending on different parameters for any moment of time. The limits of the applicability of the proposed model are also given. Thus, the analysis of the calculation results showed that the constructed solution allows one to sufficiently and accurately determine the values of parameters at the frontal surface for a highly permeable medium (k0 > 10−13 m2). It was proved that in the case of a highly permeable medium, the methane hydrate formation intensity will be limited by convective heat dissipation during hydrate formation.

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“…Without a pipeline a promising way of gas transportation is its conversion into the gas hydrate (solid) state and its transportation at the atmospheric pressure and low temperature (-10 ... -20°C) [1]. In [2][3][4] and some other paper, the properties of gas hydrates, basic conditions and features of their formation are described; the types of their crystallization, mechanisms of gas hydrate formation and decomposition are presented [5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the process of hydrate-formation by the method of explosive boiling of liquefied freon 134a in the water volume during decompression

Meleshkin

Elistratov

2018

MATEC Web Conf.

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The experiments on obtaining gas hydrate of refrigerant 134a were carried out by the method, based on explosive boiling-up of a layer of liquefied gas in a bulk of water at decompression. It is shown that this method combines several factors, leading to intensification of hydrate formation process, resulting in the fast gas hydrate growth. The effect of the decompression rate on the volume of produced hydrate was studied experimentally.

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The mathematical model of the gas hydrate deposit development in permafrost

Cited by 87 publications

References 21 publications

Mathematical Model of Carbon Dioxide Injection into a Porous Reservoir Saturated with Methane and Its Gas Hydrate

Mathematical Model of Carbon Dioxide Injection into a Porous Reservoir Saturated with Methane and Its Gas Hydrate

Solution of the Problem of Natural Gas Storages Creating in Gas Hydrate State in Porous Reservoirs

Experimental investigation of the process of hydrate-formation by the method of explosive boiling of liquefied freon 134a in the water volume during decompression

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