On-line underground temperature measurement system

A technology for compensating wires and above-ground parts, applied in the field of online underground temperature measurement systems, to avoid short-circuit of thermocouple wires, reduce time and manpower, and achieve good sealing performance

Active Publication Date: 2011-01-12
ENN SCI & TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The present invention also aims to solve or at least alleviate various problems or deficiencies in the above-mentioned prior art

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  • On-line underground temperature measurement system
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  • On-line underground temperature measurement system

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Embodiment Construction

[0064] As shown in each accompanying drawing, the present invention provides a kind of underground temperature measuring system, and this system comprises: thermocouple ( figure 2 The part below the reference numeral 11); the compensation wire 14 above the thermocouple ( figure 2 The part above the reference number 11), the lower end of the compensation wire 14 is connected to the upper end of the thermocouple; below the thermocouple, it is connected to the lower end of the thermocouple for guiding the The weight 1 that the thermocouple travels in the temperature measurement channel; wherein, the thermocouple is an armored thermocouple made of a combination of thermocouple wire, insulating material and metal protective sleeve and then stretched. The length of the armored thermocouple corresponds to the thickness of the highest temperature range in the underground high temperature layer to be measured.

[0065] like figure 1 As shown, in a preferred mode of the present inven...

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Abstract

The invention relates to an underground temperature measurement system. The system comprises a thermocouple, a compensating lead and a heavy hammer, wherein the compensating lead is positioned above the thermocouple, and the lower end of the compensating lead is connected with the upper end of the thermocouple; the heavy hammer is positioned below the thermocouple, connected with the lower end of the thermocouple and used for guiding the thermocouple to advance in a temperature measurement passage; and the thermocouple is a sheathed thermocouple manufactured by combined assembly of a thermocouple wire, an insulating material and a metal protective sleeve and stretching, and the length of the sheathed thermocouple corresponds to the thickness of a highest temperature interval in an underground high temperature layer to be measured. The temperature measurement system can greatly reduce the manufacturing cost of the thermocouple, effectively prolong the service life of the thermocouple and improve the automation degree of temperature measurement, and is convenient for repair and maintenance of the system per se.

Description

technical field [0001] The invention relates to an online underground temperature measuring system. The temperature measurement system of the invention can be applied to underground temperature measurement in oil drilling, underground coal gasification, coal bed gas exploitation or geothermal exploitation. Background technique [0002] In the process of oil drilling, underground coal gasification, coal bed methane exploitation, and geothermal exploitation, wells need to be built underground. The depth of the well varies from 100 to 5000m, and the thickness of the main high-temperature zone is about 40-200m. In this way, it is very time-consuming and labor-intensive to make the thermocouple on site and go up and down the well. The thermocouple wire is easy to break. The use of thermocouples under high temperature and reducing atmosphere The service life is short, and there is no effective isolation means for high-temperature, flammable and toxic gases during the temperature ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/06G01K7/02E21B47/07
Inventor 陈峰田明奎刘洪涛姚凯王媛媛
Owner ENN SCI & TECH DEV
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