Underground semiconductor refrigerating device

Abstract

The invention provides an underground semiconductor refrigerating device which comprises a base pipe, a lower connector, a heat-insulating box, a heat-conducting block, a semiconductor refrigerating sheet, a radiating block, a heat-insulating box cover and an upper connector, wherein the lower connector and the upper connector are respectively sleeved on the base pipe from the lower end and upper end of the base pipe; extending parts of the lower connector and the upper connector are lap-jointed; the heat-insulating box is sleeved between the base pipe and the lower connector or the upper connector; a heat-conducting through hole matched with the heat-conducting block is arranged on an outer wall of the heat-insulating box; the heat-conducting block, the semiconductor refrigerating sheet and the radiating block are embedded into the heat-conducting through hole in turn from outer to inner; and the semiconductor refrigerating sheet is used for forming a refrigerating surface on an inner surface and a radiating surface on an outer surface under a working state. According to the underground semiconductor refrigerating device, a temperature difference of the inner and outer surfaces is formed on the semiconductor refrigerating sheet and a heat conducting flow from inner to outer is formed at the heat-conducting through hole by the heat-insulating box, so that the real-time control on the required temperature in the heat-insulating box is realized.

Description

technical field [0001] The invention relates to the field of oil production engineering equipment, in particular to an underground semiconductor refrigeration device. Background technique [0002] As the development of oil and gas fields gradually develops into deep and unconventional reservoirs, the downhole environment is getting worse and worse, especially in deep wells, where the downhole temperature can reach 200°C. In addition, in the application of high-temperature oil displacement methods such as high-temperature gas injection and combustion, the downhole temperature will be higher, which puts forward higher requirements for the temperature resistance of downhole tools. [0003] With the continuous development of wellbore control technology, downhole monitoring and control systems are being used more and more. In these control systems, it is inevitable to use electronic circuits and large-scale integrated circuit (IC) chips to realize functions such as parameter mon...

AI Technical Summary

Problems solved by technology

However, it is mainly aimed at the application field where the ambient temperature is room temperature, and its structure and volume are difficult to apply in downhole tools

[0005] To sum up, at present, in deep wells, high-temperature wells, thermal recovery wells and other applications with high downhole temperatures, there is no circuit system that can achieve long-term high-temperature applications, and it must be realized through heat preservation and cooling structures

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