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Study of heat transfer in cryogenic gravel filter during its transportation along a drillhole

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Category: Geotechnical and mining mechanical engineering, machine building

Last Updated on 21 July 2014

Published on 24 December 2013

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Authors:

A.A. Коzhevnikov, Dr. Sci. (Tech.), State Higher Educational Institution “National Mining University”, Professor of the Department of Mineral Deposits Exploration Technology, Dnipropetrovsk, Ukraine.

A.K. Sudakov, Cand. Sci. (Tech.), Associate Professor, State Higher Educational Institution “National Mining University”, Doctoral Student of the of Mineral Deposits Exploration Technology, Dnipropetrovsk, Ukraine.

A.Yu. Dreus, Cand. Sci. (Tech.), Associate Professor, O. Gonchar Dnepropetrovsk National University, Senior Lecturer of the Department of Aerohydrodynamics, and Heat and Mass Transfer, Dnipropetrovsk, Ukraine.

Ye.Ye. Lysenko, O. Gonchar Dnepropetrovsk National University, Assistant Lecturer of the Department of Aerohydrodynamics, and Heat and Mass Transfer, Dnipropetrovsk, Ukraine.

Abstract:

Purpose. To examine the process of heat transmission in the porous coarse environment of cryogenic gravel filters element of block construction, manufactured by low-temperature technology, during its transportation along the drillhole.

Methodology. We have applied the mathematical simulation of the heat transmission process. We have carried out the comparative analysis of the results of the simulation and test-bed experimental research of the process of heating the cryogenic gravel element in the aqueous environment.

Findings. We have created the mathematical model of the process of heat transmission in the porous coarse environment of cryogenic gravel filters element during its transportation along the drillhole. According to the conditions of heat transmission (physical-mechanical properties of the composite in cryogenic gravel filter element, temperature of cryogenic gravel element heating, and temperature of environment, etc.) we have substantiated the technological conditions of the cryogenic-gravel filter transportation along the drillhole.

Originality. For the first time we have obtained the dependence of phase transition time of composite on its thermal and physical characteristics during the heat transmission in porous coarse environment during its transportation along the drillhole. This composite was the experimental example of cryogenic gravel element.

Practical value. The results of numeral investigations contributed to development of the methods of designing the manufacturing technologies of the cryogenic-gravel elements and equipment for the productive horizons of boreholes.

References:

1. Новая технология создания гравийных фильтров буровых скважин / А.А. Кожевников, А.К. Судаков, С.М. Сушко, А.Д. Бегун // Горный журнал Казахстана – 2011. – № 10. – С. 4–8.

Коzhеvnikov, А.А., Sudakov, А.K., Sushko, S.М. and Begun, А.D. (2010), “New technology of creation of gravelers for drillholes”, Mining Jornal of Kazakhstan, no. 10. pp. 4–8.

2. Поврезнюк Е.Б. Математическая модель промерзания (оттаивания) малопроницаемой водонасыщенной пористой среды, содержащей воздух / Е.Б. Поврезнюк, А.А. Рядно // Вісник Дніпр. ун., серія Механіка – 1999. – вип. 2. – Т. 1. – С. 89–94.

Pobrezniuk, Ye.B. and Ryadno, А.А. (1999), “The mathematical model of freezing (thawing) in less-permeable, water-saturated, porous environment, which contains air”, Visnyk Dnipropetrovskoho universytetu, Mechanics series, no. 2, vol. 1, pp. 89–94.

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