A dry gas quantitative enrichment system and method

A technology for enriching and drying gas, applied in the field of oil and gas exploration and research, it can solve the problems of uncertain injection volume and high gas sample requirements, and achieve the effect of perfect data and ensure accuracy.

Active Publication Date: 2022-07-15
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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Problems solved by technology

[0004] In order to solve the technical problems of high gas sample requirements and uncertain sample volume in the prior art, the present invention provides a dry gas quantitative enrichment system and method, and the specific scheme is as follows:

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  • A dry gas quantitative enrichment system and method
  • A dry gas quantitative enrichment system and method

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Embodiment Construction

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like figure 1 , figure 2 As shown, this embodiment provides a dry gas quantitative enrichment system, including an enrichment tube 1, a cold trap 2 and a switching pipeline 3. The cold trap 2 is used to adjust the temperature of the enrichment tube 1, and the switching pipeline 3 is connected to the enrichment pipeline 3. The headers 1 are connected, and the switching pipeline 3 is provided with a sealed sample injection port 303 . In the quantitative enrichment stage, switch the pipeline 3 to control the flow path of the carrier gas 307, so that the carrier gas 307 flows directly to the analytical instrument 309 and not to the sample injection port 303 and the enrichment tube 1, and switches the pipeline 3 and the enrichment tube The connected pipeline 1 and the enrichment pipe 1 form a closed space isolated from the outside, and the closed space is in a negat...

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Abstract

The invention provides a dry gas quantitative enrichment system and method. In the quantitative enrichment stage, the closed space in the enrichment system is in a negative pressure state, and there is no requirement for the gas volume and air pressure of the gas sample entering the closed space, which can meet the requirements of It is suitable for the experimental analysis requirements of gas samples with low gas volume and low pressure stored in various ways, and has a wide range of applications. Quantitative gas samples can be drawn and injected into the closed space through a scaled device under normal pressure to realize quantitative sampling. In the sampling analysis stage, the carrier gas is sent into the previous closed space by switching the pipeline switching path, and all the gas enters the closed space. The gas samples in the space finally enter the analytical instrument with the carrier gas, which ensures the accuracy of the gas sample injection volume. The data is more complete.

Description

technical field [0001] The invention belongs to the field of oil and gas exploration research, and in particular relates to a dry gas quantitative enrichment system and method. Background technique [0002] The associated natural gas in the oil field, after dehydration, purification and light hydrocarbon recovery process, after the liquefied gas and light oil are extracted, the main component is methane. The processed natural gas is called dry gas. Generally speaking, natural gas with a methane content of more than 90% is called dry gas. [0003] Although the enrichment device and enrichment method in the prior art have carried out effective enrichment and analysis of dry gas, they have high requirements on gas samples, and require gas samples to be steel cylinder samples, with relatively large pressure and gas volume. , while the actual sample analysis will encounter other gas samples stored in various ways, such as air bag samples and bottled samples. In addition, after ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/40G01N30/08
CPCG01N1/4022G01N30/08G01N2001/4033
Inventor 张彩明张志荣王萍范明陶成
Owner CHINA PETROLEUM & CHEM CORP
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