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A method and system for testing thermophysical parameters of rocks under high temperature and high pressure

A technology of thermal physical properties of rocks, high temperature and high pressure, applied in the direction of thermal conductivity of materials, thermal development of materials, etc., can solve the problems of increased burden of testing work, difficulty in controlling accuracy, etc.

Inactive Publication Date: 2018-11-02
CHINA UNIV OF GEOSCIENCES (WUHAN) +1
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Problems solved by technology

[0005] However, rock thermophysical parameter testing systems with pressurization or heating functions often require manual control of hydraulic servo pumps to pressurize rock samples, the accuracy is difficult to control, and manual measurement of various data is required, which inevitably adds a lot of burden to the test work

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  • A method and system for testing thermophysical parameters of rocks under high temperature and high pressure
  • A method and system for testing thermophysical parameters of rocks under high temperature and high pressure
  • A method and system for testing thermophysical parameters of rocks under high temperature and high pressure

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with drawings and embodiments.

[0032] The invention provides a method for testing rock thermal physical property parameters under high temperature and high pressure, comprising the following steps:

[0033] (1) Preliminarily process the deep underground rock collected in the field into a rectangular cuboid rock sample with a square cross section, grind the surface of the rock sample to be smooth, measure the size of the rock sample with a vernier caliper, determine its height δ and calculate the cross-sectional area F;

[0034] (2) Put the rock sample vertically into the test chamber of the MTS true triaxial test cylinder, let a pair of opposite side surfaces of the rock sample stick to the two measuring ends of the thermocouple sensor respectively, and then make the rock sample The four side surfaces of the sample are in contact with the flat surface heat source in the test cylinder, and finally th...

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Abstract

The invention provides a rock thermophysical parameter testing method under the conditions of high temperature and high pressure. The method comprises the following steps: processing a deep-layer rock into a rectangular-solid rock sample, putting the rock sample into an MTS true triaxial testing cylinder, carrying out heating and pressurization on the rock sample under the control of an MTS controller, and measuring the thermophysical parameters of the rock sample. The invention also provides a testing system which comprises the MTS controller, the MTS true triaxial testing cylinder, an MTS servo supercharger and an MTS hydraulic machine. The method and system can be utilized to accurately simulate the underground deep layer rock high-pressure state; and the temperature control and acquisition module can keep the rock sample temperature constant, accurately measure the rock sample temperature and accurately simulate the high-temperature state of the underground deep layer rock. A stable flat band process is utilized to measure the heat conductivity coefficient of the rock sample. The system is simple to operate, and has the advantages of high measuring accuracy, short testing period and accurate thermophysical parameter measurement result.

Description

technical field [0001] The invention relates to a method and a test system for testing thermal physical property parameters of rock under high temperature and high pressure, belonging to the field of thermal physical property testing of rock and soil. Background technique [0002] Energy issues restrict the economic development of human society, and the fundamental way to solve energy issues lies in renewable energy. Geothermal resources are typical clean and renewable energy sources, which have the advantages of being clean, sustainable, renewable, and comprehensively utilizable, and have enormous economic value. Geothermal energy includes shallow geothermal energy and deep geothermal energy. Deep geothermal energy refers to geothermal energy that is thousands of meters deep in the earth and has a high temperature. Deep geothermal energy resources are huge and have broad application prospects. In recent years, geothermal energy has become the research focus of scientific ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/20G01N25/18
CPCG01N25/18G01N25/20
Inventor 骆进黄维郭清海魏显贵朱明成张灿海项伟庄亚芹朱永强
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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