Shale aperture measurement device and method based on imbibition and ion diffusion property

A technology of ion diffusion and measuring device, which is applied in the direction of measuring device, suspension and porous material analysis, permeability/surface area analysis, etc. It can solve the problems of large difference in pore size, difficulty in accurate measurement, high test cost, etc., and achieve low environmental impact , reliable results, and low cost of testing

Active Publication Date: 2017-03-15
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As an important parameter to evaluate the physical characteristics of shale, the pore size is often difficult to measure accurately
At present, the pore size of shale is mainly determined

Method used

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  • Shale aperture measurement device and method based on imbibition and ion diffusion property
  • Shale aperture measurement device and method based on imbibition and ion diffusion property
  • Shale aperture measurement device and method based on imbibition and ion diffusion property

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1: see figure 1 , a shale pore size measurement device based on imbibition and ion diffusion characteristics, characterized in that it includes: a high-precision analytical balance 1, a support 2, a flask 3, a fishing line 4, a magnetic stirrer 5, a lifting system 6, a conductivity Rate meter 7, constant temperature and humidity box 8;

[0050] The high-precision analytical balance 1 is placed above the support 2 for measuring the mass change of the shale sample before and after water absorption; the precision of the high-precision analytical balance 1 is 0.0001g;

[0051] The support 2 is placed in the constant temperature and humidity box 8 for carrying the high-precision analytical balance 1; the middle of the support 2 is provided with a small hole for hanging the high-precision analytical balance 1 The shale sample is vertically suspended inside the support 2;

[0052] The flask 3 is placed on the upper surface of the magnetic stirrer 5 for containing dis...

Embodiment 2

[0058] Example 2: see figure 2 , a shale pore size measurement method based on imbibition and ion diffusion characteristics, comprising the following steps:

[0059] A. Extract cylindrical shale samples and calculate the cross-sectional area A c , seal the cylindrical surface of the cylindrical shale sample with epoxy resin, place it in a drying box and dry it until the quality of the cylindrical shale sample no longer changes;

[0060] B. Place the high-precision analytical balance on the support, hang the dried cylindrical shale sample on the high-precision analytical balance with a fishing line, and record the reading M0 of the high-precision analytical balance;

[0061] C. Place the lifting system under the support, place the flask on the magnetic stirrer, and place the magnetic stirrer on the lifting system;

[0062] D. Add volume V distilled water into the flask, and measure the conductivity G0 in the water;

[0063] E. Turn on the magnetic stirrer to raise the lifti...

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Abstract

The invention discloses a shale aperture measurement device and method based on imbibition and ion diffusion property. The device comprises a high-precision analytical balance (1), a support (2), a flask (3), a fishing line (4), a magnetic stirrer (5), a lifting system (6), a conductivity meter (7) and a constant temperature humidity chamber (8). According to the shale aperture measurement device and method based on the imbibition and the ion diffusion property, in a way of experimental measurement, characteristic high capillary force imbibition and strong ion diffusion property of shale are given full play to, a high-precision shale imbibition and ion diffusion synchronous detection device is designed, an average aperture evaluation methodology suitable for shale is provided, and science and precision of shale aperture measurement are further improved; the shale aperture measurement method based on the imbibition and the ion diffusion property has the advantages of being simple in operation, small in environmental influence, low in testing cost and reliable in result.

Description

technical field [0001] The invention belongs to the technical field of shale gas development, in particular to a shale pore size measurement device and method based on imbibition and ion diffusion characteristics. Background technique [0002] Southern my country's marine shale gas resources are abundant. As an important alternative energy source, its commercial exploitation is of great significance to ensure my country's energy security, reduce domestic energy costs and environmental pressure. Shale gas is a typical marginal oil and gas resource, which is specifically manifested in the extremely low porosity and permeability of the reservoir, the pore roar is at the micro-nano level, and the pore structure is complex. As an important parameter to evaluate the physical characteristics of shale, pore size is often difficult to measure accurately. At present, the pore size of shale is mainly determined by means of mercury injection, gas adsorption, and nuclear magnetic resona...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/0893
Inventor 杨柳张旭辉鲁晓兵李鹏罗大双刘庆杰张祖波葛洪魁
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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