Device and method for testing porosity and adsorption parameters of gas-bearing shale

A technology for shale porosity and adsorption parameters, which is applied in measuring devices, suspension and porous material analysis, instruments, etc. It can solve the problems of adsorption gas volume error, unstable gas injection pressure, and failure to consider the heating and constant temperature of injected gas, etc. question

Active Publication Date: 2014-07-23
NORTHEASTERN UNIV
View PDF5 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the test, temperature fluctuations will lead to unstable gas injection pressure, which will cause errors in the test of the amount of

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device and method for testing porosity and adsorption parameters of gas-bearing shale
  • Device and method for testing porosity and adsorption parameters of gas-bearing shale
  • Device and method for testing porosity and adsorption parameters of gas-bearing shale

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] like figure 1 As shown, the testing device for gas-bearing shale porosity and adsorption parameters of the present invention includes a constant temperature triaxial pressure chamber, an axial pressure loading system, a confining pressure loading system, an upper end adsorption system, a lower end adsorption system, a vacuum system, a constant temperature system and Data control acquisition system;

[0097]The constant temperature triaxial pressure chamber includes an axial pressure chamber 14, a confining pressure chamber 19, a self-balancing piston 15, a ball head 16, a pressure-elastic axial displacement sensor 20, a chain-type annular displacement sensor 18, two sets of upper and lower porous gaskets 24, The upper pressure head 25, the lower pressure bearing table 26 and the sample heating device; the axial pressure chamber 14 is arranged above the confining pressure chamber 19, and is connected by the self-balancing piston 15, and the self-balancing piston 15 exten...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a device and a method for testing porosity and adsorption parameters of gas-bearing shale, belonging to the fields of shale engineering and unconventional gas engineering. The device for testing the porosity and adsorption parameters of the gas-bearing shale comprises a constant-temperature triaxial cell, an axial pressure loading system, a confining pressure loading system, an upper end adsorbing system, a lower end adsorbing system, a vacuuming system, a constant temperature system and a data acquisition control system. The method for testing the porosity and adsorption parameters of the gas-bearing shale is used for simultaneously testing the porosity and adsorption parameters of the shale at different temperatures and under different bias environments and calculating the real adsorption quantity and is applicable to the environment with deep high ground stress and high temperature, the axial pressure is as high as 300MPa, the confining pressure is as high as 100MPa, the pressure of filled gas is as high as 70MPa, the highest temperature is up to 100 DEG C, a sample is a virgin rock core of which the size is as large as Phi 50mm*100mm, the test time is saved by nearly 75%, and the test efficiency is improved greatly.

Description

technical field [0001] The invention belongs to the field of rock engineering and unconventional natural gas engineering, and particularly relates to a testing device and method for porosity and adsorption parameters of gas-bearing shale. Background technique [0002] Micro-cracks and pores in gas-bearing shale are the storage space for methane molecules. According to the geological parameters of gas-bearing shale in the United States, 25%-60% of methane molecules exist in the intergranular pores of the inorganic matrix of gas-bearing shale in a free state. And in natural fissures, 40%-75% of methane molecules exist in the adsorbed state on the surface of organic matter pores such as kerogen and clay particles. The initial high production of gas-bearing shale mainly depends on the free gas in pores and fractures, while the long-term stable production depends on the adsorbed gas in organic matter and clay particles. At present, the exploration and development of shale gas in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N15/08G01N7/14
Inventor 冯夏庭陈天宇张希巍张凤鹏李元辉付长剑
Owner NORTHEASTERN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap