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A device and method for in-situ nuclear magnetic resonance detection of methane and water adsorption state

A technology of nuclear magnetic resonance and water adsorption, which is applied in the direction of analysis using nuclear magnetic resonance, can solve the problems of incapable gas switching, no water carrying, etc., and achieves the effect of convenient operation.

Active Publication Date: 2020-10-16
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the nanopore water absorption process that people are concerned about, the device does not have the function of carrying water, and the sample processing gas and hyperpolarized xenon gas share a gas path, and the gas switching cannot be performed flexibly.

Method used

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  • A device and method for in-situ nuclear magnetic resonance detection of methane and water adsorption state
  • A device and method for in-situ nuclear magnetic resonance detection of methane and water adsorption state
  • A device and method for in-situ nuclear magnetic resonance detection of methane and water adsorption state

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] In the embodiment of the present invention, commercial ordered mesoporous silicon MCM-41 is used as the research object, and its one-dimensional pore diameter is about 3 nm.

[0028] Such as figure 1 As shown, a device for in-situ nuclear magnetic resonance detection of methane and water adsorption states of the present invention includes a hyperpolarized xenon gas path, a methane gas path, a gas mixing device and a sample tube, and the hyperpolarized xenon gas path includes a hyperpolarized xenon gas path A polarized xenon gas source 1, a first decompression valve 2 connected to the hyperpolarized xenon gas source 1, a hyperpolarized xenon generator 3 connected to the outlet of the first decompression valve 2, and a hyperpolarized xenon generator 3 outlet gas Cooling condenser 4, the first three-way valve 5 that vents one end of the intake air and the other ...

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Abstract

The invention discloses a device and method for in-situ nuclear magnetic resonance detection of methane and water adsorption states. The hyperpolarized xenon gas path and the methane gas path are mixed, and the methane gas path selects whether to carry water, and the hyperpolarized xenon gas path is used to select whether to carry water. The continuous sampling method of xenon spectrum and hydrogen spectrum monitors the water absorption process of the dry sample and the dehydration process of the water-absorbed sample, and realizes the simultaneous detection of the nanopore environment and gas adsorption state of the sample. The invention utilizes the high sensitivity of the nuclear magnetic resonance technology to provide a real-time non-destructive detection device and method for the adsorption state of the water-containing gas in the nanopore channel.

Description

technical field [0001] The invention belongs to the field of nuclear magnetic resonance in-situ characterization, and in particular relates to a device and method for in-situ nuclear magnetic resonance detection of methane and water adsorption states. Background technique [0002] With the gradual development of shale gas exploration activities worldwide, the exploitation and utilization of unconventional oil and gas resources has attracted widespread attention. Economic value must be considered in the exploitation of unconventional oil and gas resources, but only a part of the technically exploitable oil and gas resources has economic value. To obtain more resources, lower production costs and more advanced technologies are required. The most common reservoir stimulation technique for shale gas extraction is hydraulic fracturing, which involves pouring millions of gallons of water, sand and chemicals into the ground to fracture rock, releasing methane buried in the rock's v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N24/08
CPCG01N24/08
Inventor 包信和胡园莉潘秀莲刘宪春韩秀文
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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