Method for calculating mudstone thermal conductivity by using mineral content

A technology of mineral content and thermal conductivity, which is applied in the direction of material analysis, material analysis, and measurement device using wave/particle radiation, which can solve the problems of thermal conductivity error, spatial layout damage, etc. Avoid errors and avoid the effect of inconsistent mineral content

Active Publication Date: 2020-11-17
CHINA UNIV OF MINING & TECH
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Problems solved by technology

However, these commonly used mathematical methods are based on the fact that the minerals that make up the mudstone are regularly arranged in the mudstone, and when the mineral data in the mudstone are obtained experimentally, the minerals in the mudstone are in the original spatial arrangement and geometric combination relationship, However, since the more commonly used modern experiments to obtain mineral composition data in mudstone are geochemical methods: the spatial layout of mineral particles in mudstone is completely destroyed, so there are some limitations in using these mathematical models to calculate the thermal conductivity of mudstone. error

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  • Method for calculating mudstone thermal conductivity by using mineral content
  • Method for calculating mudstone thermal conductivity by using mineral content
  • Method for calculating mudstone thermal conductivity by using mineral content

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Embodiment Construction

[0042] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0043] The invention provides a calculation method for calculating the thermal conductivity of mudstone with mineral components, and the main calculation steps are as follows:

[0044] Step 1. Clean the collected mudstone samples to remove floating soil and other substances on the surface of the samples, avoid washing with water, so as not to dissolve clay minerals, so as not to affect the later XRD laboratory measurement of mudstone minerals.

[0045] Step 2, put the clean mudstone sample into a vacuum drying oven for vacuum drying, the drying temperature is 50°C, and the drying time needs to be more than 24 hours, until the weight of the sample no longer changes.

[0046] Step 3, using the volumetric flask method to test the apparent relative density of the sample.

[0047] The specific steps of relative density pycnometer assay a...

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Abstract

According to the method for calculating the mudstone heat conductivity by utilizing the mineral content, the existing mineral data is utilized to predict and calculate the heat conductivity value of mudstone, so that the measurement of the heat conductivity value of a drilling sample is avoided, and the research expenditure in research work such as geodetic heat flow is reduced; the volume contentpercentage of minerals in mudstone is used for calculating the heat conductivity value of mudstone, and the phenomenon that weight percentage data measured through an XRD experiment does not conformto the mineral content of a traditional heat conductivity prediction model is avoided. The mineral thermal conductivity entropy of the mudstone is used for calculating the thermal conductivity of themudstone, and errors caused by a mineral space structure in the mudstone due to a traditional calculation method are avoided.

Description

technical field [0001] The invention relates to the technical field of calculating the thermal conductivity of mudstone, in particular to a method for calculating the thermal conductivity of mudstone by using mineral content. Background technique [0002] In the process of studying geothermal disasters in coal mining areas and geothermal resources in development areas, accurate calculation of thermal conductivity of mudstone is of great significance for the later research of lithospheric geothermal, terrestrial heat flow, and rock conduction. The thermal conductivity of rocks determines the transfer efficiency and speed of the lithosphere in the process of heat conduction, and is the most important parameter in the thermodynamic properties of rocks. However, due to the limitations of the method of measuring the thermal conductivity of rocks in the laboratory, especially for the laboratory thermal conductivity measurement of drilling cuttings samples, it is difficult for expe...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/18G01N15/08G01N9/36G01N23/207
CPCG01N25/18G01N15/088G01N9/36G01N23/207G01N2223/056G01N2223/1016Y02E10/10
Inventor 吴财芳蒋秀明
Owner CHINA UNIV OF MINING & TECH
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