Experimental device and experimental method for replacement and adsorption of binary gas in porous medium

A technology of porous media and experimental equipment, applied in the direction of measuring equipment, instruments, scientific instruments, etc., to achieve the effect of accurately measuring temperature, avoiding influence, and avoiding errors

Inactive Publication Date: 2022-02-18
CHINA UNIV OF GEOSCIENCES (BEIJING)
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the embodiments of the present invention is to provide an experimental device for displacement and adsorption reaction of binary gas in porous media, so as to solve the existing problem of simulating carbon dioxide injection to replace adsorbed shale gas

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
  • Experimental device and experimental method for replacement and adsorption of binary gas in porous medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] see figure 1 As shown, the technical solution of the present invention provides an experimental device for displacement adsorption of binary gas in porous media, including: a vacuum system, a gas supply system, an adsorption system and a free gas analysis system.

[0031] The vacuum system is a vacuum pump 20 . The gas supply system consists of a methane cylinder 1, a pressure gauge 2, a valve 3, a carbon dioxide cylinder 4, a pressure gauge 5 and a valve 6. The adsorption system consists of a gas storage tank 17, a valve 8, a pressure gauge 9, an adsorption tank 10, a porous medium (shale) powder sample 11, a temperature probe 12, a valve 13, a pressure gauge 14, a valve 15, and a gas storage tank 2 16. Valve 17, pressure gauge 18, valve 19, and thermostat 24 form. The free gas analysis system consists of a valve 21 , a pressure reducing valve 22 and a gas chromatograph 23 .

[0032] The lid of the sample tank 10 has a cavity sunken downwards. Putting the temperatur...

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 an experimental device and an experimental method for displacement and adsorption analysis of binary gas on a porous medium. The experimental device comprises a vacuum system, a gas supply system, an adsorption system and an analysis system. The vacuum system can be used for emptying gas in the adsorption device. The gas supply system injects different gases into two gas storage tanks respectively. The adsorption system comprises a heating constant-temperature box, a first gas storage tank, a second gas storage tank and a sample tank. The gas in the first gas storage tank is adsorbed on a sample in advance, after balance is achieved, the gas in the second gas storage tank is injected into the sample tank, and due to the difference of the adsorption capacity, the gas injected later replaces the gas adsorbed in advance, and balance is achieved. The analysis system can detect the components of the free gas in the sample tank and calculate the replacement efficiency of the gas. The device can simulate and test the replacement effect of injected carbon dioxide on adsorbed shale gas at high temperature and high pressure, and has important significance for improving the recovery ratio of the shale gas and geological storage of the carbon dioxide.

Description

technical field [0001] The invention relates to the technical field of carbon dioxide injection to enhance the recovery of shale oil reservoirs, in particular to an experimental device and an experimental method for displacement and adsorption of binary gas on porous media. Background technique [0002] At present, hydraulic fracturing and horizontal drilling are the common exploitation techniques for shale oil and gas resources, but this technique will cause many environmental problems, such as groundwater pollution, migration of chemical elements, and induction of deep earthquakes. At the same time, the extraction efficiency of this technology is not high, only 15%, especially the shale gas that exists in the micropores in the adsorbed state in the reservoir has not been extracted, and this part accounts for 40% to 80% of the total reserves. [0003] The size of microscopic pores in shale is mostly nanoscale, and water cannot effectively enter without destroying the origin...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/04G01N30/02
CPCG01N7/04G01N30/02
Inventor 曹冰于青春李铱
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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