On the development of downhole thermoelectric device for the construction and operation of wells in permafrost areas

Описание

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.24887/0028-2448-2018-3-66-69

Ключевые слова: Experimental investigation, Heat equipment, Peltier effect, Permafrost rock, Temperature distribution, Thermoelectric effect

Аннотация: Climate warming, which has been going on the territory of Russia with the speed of two and a half times as much as global warming, has become the reason of permafrost melting, which takes more than half of the territory of the Russian Federation. According to IPCC's estimates, the warming which has been since the middle of the 20thПоказать полностьюcentury is human induced with probability of 95%. That is why the construction and operation of oil wells may lead to acceleration of permafrost degradation process, which will cause numerous technogenic accidents. In this regard development of thermal protective equipment is a crucial task. The central focus of research and design work is development of passive thermal protective equipment like thermal insulated direction, oil well tubing etc., and also development of active thermal protective equipment - heat stabilizers with the use of coolants, for example, ammonia, Freon R22, but these devices have got some drawbacks. That is why in order to create effective and environmental friendly thermal protective equipment it is necessary to develop new technology, which would be able to control and react swiftly on natural and man-induced impact on permafrost. In our opinion, downhole thermoelectric device can be used as such technology. It means thermal flow control in the system "well-permafrost" by regulating current rate and voltage in thermoelectric elements with optional use of thermal conductivity of different materials for improving effectiveness of their work. In this article the results of experimental investigation of temperature distribution along the plate surface from the action of thermoelectric element have been included, experimental data with theoretical values of Green functions and the suggested formula have been compared. The conclusion concerning the possibility of designing a downhole thermoelectric device for thermal flow control in the system "well-permafrost" has been drawn. © 2018 Neftyanoe Khozyaistvo. All rights reserved.

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Издание

Журнал: Neftyanoe Khozyaystvo - Oil Industry

Выпуск журнала: Is. 3

Номера страниц: 66-69

ISSN журнала: 00282448

Издатель: Neftyanoe Khozyaistvo

Авторы

  • Pavlova P.L. (Siberian Federal University, Krasnoyarsk, Russian Federation)
  • Kondrashov P.M. (Siberian Federal University, Krasnoyarsk, Russian Federation)

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