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Distributed temperature testing system and method for hot dry rock deep wells

A test system, hot dry rock technology, applied in construction and other fields

Active Publication Date: 2019-10-08
CENT FOR HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a distributed temperature testing system and method for hot dry rock deep wells to solve the problem that existing methods can only achieve point temperature measurement

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  • Distributed temperature testing system and method for hot dry rock deep wells
  • Distributed temperature testing system and method for hot dry rock deep wells

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Embodiment Construction

[0025] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, where the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principle of the present invention.

[0026] According to a specific embodiment of the present invention, such as figure 1 As shown, a distributed temperature testing system for deep wells in dry hot rock is disclosed, including a distributed optical fiber temperature acquisition device 1, a logging winch 2, a downhole device 3, and a temperature measurement optical cable 4.

[0027] Among them, the distributed optical fiber temperature acquisition device 1 is a device that completes the collection and data processing of the temperature along the temperature measurement optical cable 4; the logging winch 2 can be used for the storage and transportation of the temperature measurement optical cable 4, ...

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Abstract

The invention relates to a distributed temperature testing system and method for a hot dry rock deep well. The system comprises a distributed optical fiber temperature collection device, a logging winch, a well descending device and a temperature measuring optical cable, wherein the distributed optical fiber temperature collection device is used for completing collection of temperature along the temperature measuring optical cable and data processing; the logging winch is used for containing and transporting the temperature measuring optical cable and further used for providing a power source for fixed-depth and uniform-speed descending and winding of the temperature measuring optical cable; the well descending device is used for mechanical fixation and guidance for descending and winding of the temperature measuring optical cable; and the temperature measuring optical cable serves as a temperature sensing element and a data transmission channel. The system and the method achieve distributed temperature measurement of the hot dry rock deep well, and have the characteristics of resisting high temperature and high pressure, resisting electromagnetic interference, being free of limitation of severe environments like complex geometric space, and the like.

Description

Technical field [0001] The invention relates to a distributed optical fiber sensing detection technology, in particular to a distributed temperature detection system used in a deep well of dry hot rock. Background technique [0002] The national survey and evaluation of geothermal resources carried out during the "Twelfth Five-Year Plan" period shows that my country is rich in hot dry rock resources, has significant benefits in energy conservation and emission reduction, and has broad prospects for exploration and development. During the "13th Five-Year Plan" period, it is necessary to further carry out investigation and evaluation of hot dry rock resources, gradually ascertain the distribution of geothermal resources in key areas, evaluate the amount of geothermal resources, mineable resources and exploitation potential, and delineate several prospects with prospects for prospecting and potential for power generation and heating. In the hot dry rock target area, carry out hot dr...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/07
CPCE21B47/07
Inventor 张青郝文杰蒿书利李洪涛史彦新王新杰杨卓静蒋凡张晓飞孟宪玮
Owner CENT FOR HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CGS