Test device for measuring permeability coefficient of supercritical CO2 in rocks

A test device and permeability coefficient technology, which is applied in the direction of measurement device, permeability/surface area analysis, suspension and porous material analysis, etc., to achieve the effect of convenient use, reasonable design and low device cost

Inactive Publication Date: 2014-02-19
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there are currently no specific targets for supercritical CO 2 Measuring device for permeability coefficient in rock

Method used

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  • Test device for measuring permeability coefficient of supercritical CO2 in rocks
  • Test device for measuring permeability coefficient of supercritical CO2 in rocks

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Experimental program
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Embodiment Construction

[0020] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, the test device of the present invention includes a high pressure permeation chamber 1, a constant temperature water circulation device 2, a confining pressure booster 3, an inlet buffer container 4, an outlet pressure buffer container 5, a back pressure regulator valve 6, an outlet pressure regulator valve 7, flow meter 8, and CO 2 booster pump9. The connections between them are:

[0022] The high-pressure permeation chamber 1 is used to place rock samples for permeation tests, and is connected to the constant temperature water circulation device 2, the confining pressure booster 3, the inlet buffer container 4, and the outlet buffer container 5.

[0023] One end of the confining pressure booster 3 is connected to the high-pressure infiltration chamber 1, and the other end is connected to a compressed air ...

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Abstract

The invention relates to the field of geological engineering research and discloses a test device for measuring a permeability coefficient of supercritical CO2 in rocks. The test device is characterized by comprising a high-pressure permeation chamber, a contact-temperature water circulation device, a confining pressure supercharger, an inlet buffer container, an outlet pressure buffer container, a backpressure regulating valve, an outlet pressure regulating valve, a flowmeter and a CO2 booster pump. The high-pressure permeation chamber is used for containing a rock sample for performing a permeation test and is respectively connected with the contact-temperature water circulation device, the confining pressure supercharger, the inlet buffer container and the outlet pressure buffer container. A key member of the device is the high-pressure permeation chamber. The high-pressure permeation chamber is made of high-strength stainless steel and has certain thickness, and high pressure in an inner cavity of the high-pressure permeation chamber is borne, and the high-pressure permeation chamber is not damaged. The high-pressure permeation chamber comprises an outer shell, the inner cavity, a safety valve and an exhaust valve. The test device is reasonable in design, convenient to use and high in efficiency, and the cost of the whole device is low.

Description

technical field [0001] The invention relates to a method for measuring supercritical CO in the field of geological engineering research. 2 Experimental setup for permeability coefficient in rock. Background technique [0002] CO 2 Geological storage is an effective measure to reduce greenhouse gas emissions. In an environment of high temperature (greater than 31.26°C) and high pressure (greater than 7.38MPa) deep underground, the CO injected into the formation 2 Mainly in the supercritical state. It is a state with unique properties between liquid and gas. Therefore, during CO 2 Before geological storage, it is necessary to measure supercritical CO 2 Permeability coefficient in target reservoir (rock medium) to determine CO 2 injection pressure, and predicted CO 2 The migration process after injection into the underground rock formation, so as to evaluate the CO 2 Stability and security of geological storage. [0003] Through patent retrieval, it is found that i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
Inventor 叶斌叶为民
Owner TONGJI UNIV
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