Formation of gas hydrates in a porous medium during an injection of cold gas

Shagapov, V. Sh.; Мусакаев, Н. Г.; Хасанов, М. К.

doi:10.1016/j.ijheatmasstransfer.2015.01.105

Cited by 73 publications

(15 citation statements)

References 8 publications

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“…The process of hydrate formation and decomposition is an important part of the study of the theoretical system of hydrates. [162] The characteristics of the formation and decomposition of hydrates need to be understood. In this way, the formation or decomposition of hydrates would be controlled.…”

Section: Measuring the Hydrate Formation And Decomposition Processmentioning

confidence: 99%

Application of X‐Ray Computed Tomography Technology in Gas Hydrate

Zheng

Tang

et al. 2019

Energy Tech

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Clathrate hydrates are formed by water molecules and natural gas molecules under a certain temperature and pressure. Natural gas hydrates are mainly distributed in the marine sediments and the permafrost in nature. As a kind of potential clean energy, determining the structural characteristics of hydrates in sediments is the prerequisite for the safe and economic exploitation of natural gas hydrate. X‐ray computed tomography (CT) is a potential method to nondestructively detect the occurrence of natural gas hydrate. The basic physical properties such as porosity, hydrate saturation, and sediment permeability of the hydrate‐bearing sediments are analyzed by calculating the CT numbers or combining with the network model. Therefore, the X‐ray CT is used to study the hydrates produced in the laboratory and the hydrates formed in the nature by scientists all over the world. By summarizing the previous research, this article focuses on the important role of X‐ray CT in the hydrate research from the following three aspects: analyzing the basic physical properties of hydrate sediment, identifying the occurrence mode of hydrate in sediments, and measuring the hydrate formation and decomposition process. In response to the research progress and future research directions, relevant suggestions had been put forward.

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Section: Measuring the Hydrate Formation And Decomposition Processmentioning

confidence: 99%

Application of X‐Ray Computed Tomography Technology in Gas Hydrate

Zheng

Tang

et al. 2019

Energy Tech

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“…The conditions of mass conservation for methane and water in the one dimensional statement can be presented as [1,2]:…”

Section: Basic Equationsmentioning

confidence: 99%

“…The self-similar solution to the problem on cold methane injection into a stratum, saturated with water and methane, was obtained in [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Regimes of Decomposition of Clathrate in Natural Strata Purged by Methane

Хасанов

Shagapov

2016

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The process of decomposition of a methane clathrate in a finite-length stratum initially saturated with methane clathrate and methane, which is purged by warm methane, is studied. The influence of the initial parameters of the stratum and purging conditions on the evolution of methane clathrate temperature and saturation is examined. The existence of solutions is demonstrated, which predict methane clathrate decomposition both on the frontal surface and in the volume zone.

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“…In [19], the authors in a plane-parallel formulation investigated the features of gas hydrate formation in a porous medium when cold gas (with a temperature lower than the initial reservoir temperature) is injected into a semi-infinite porous reservoir saturated in the initial state with methane and water. Self-similar solutions of this problem are constructed in straight-parallel approximation, describing the distribution of the main parameters in the reservoir of gas hydrate both on the frontal surface and in the extended region.…”

Section: Introductionmentioning

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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Formation of gas hydrates in a porous medium during an injection of cold gas

Cited by 73 publications

References 8 publications

Application of X‐Ray Computed Tomography Technology in Gas Hydrate

Application of X‐Ray Computed Tomography Technology in Gas Hydrate

Regimes of Decomposition of Clathrate in Natural Strata Purged by Methane

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

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