Device and method for releasing and extracting hydrocarbon gases in inclusion body

A hydrocarbon gas and extraction device technology, applied in the direction of measuring devices, sampling, test sample preparation, etc., can solve the problem of difficult analysis of hydrocarbon gas carbon isotope, to prevent isotope fractionation effect, accurate test, ensure accuracy Effect

Active Publication Date: 2018-12-07
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0004] In view of the above prior art, in order to solve the problem that the carbon isotopes of hydrocarbon gases in inclusions are difficult to analyze, the present invention provides a device and method for releasing and extracting hydrocarb

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  • Device and method for releasing and extracting hydrocarbon gases in inclusion body

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Embodiment 1

[0020] A device for releasing and extracting hydrocarbon gases in inclusions, comprising: an inclusion grinding system, and a vacuum system connected thereto; such as figure 1 As shown, wherein, the inclusion grinding system includes a sample pool 8, a vacuum blasting hammer 7, a bellows 5 is set between the vacuum blasting hammer 7 and the sample pool 8 to achieve sealed contact; the vacuum blasting hammer 7 is hollow inside, and the top is set The soft rubber plug 4 has several air holes 6 on the lower side of the outer wall; the vacuum system includes a vacuum tube and a mechanical pump 1, one end of the vacuum tube passes through the soft rubber plug 4 and extends into the vacuum blasting hammer 7, and the other end is connected to the mechanical pump 1, and the vacuum tube A vacuum gauge 2, a vacuum valve I and a vacuum valve II are arranged on the top.

[0021] A method for releasing and extracting hydrocarbon gases in inclusions, using the release and extraction device ...

example 1

[0027] A method for releasing and extracting hydrocarbon gas in inclusions, the steps are as follows:

[0028] (1) Vacuum detection: open the vacuum system, observe the vacuum degree in the sample pool 8 through the vacuum gauge 2 until the vacuum degree reaches 10 -2 pa, turn off the vacuum system; to simulate the presence of samples in the sample pool, move the vacuum blasting hammer 7 up and down and grind left and right, and observe the vacuum degree in the sample pool 8 through the vacuum gauge 2. If the above movement is maintained for 10 minutes, the vacuum degree does not decrease. changes, indicating that the vacuum system of sample pool 8 is normal;

[0029] (2) Put the sample containing inclusions into the sample pool 8, turn on the mechanical pump 1, close the vacuum valve I3, vacuumize the sample pool 8, and observe the vacuum degree of the system through the vacuum gauge 2;

[0030] (3) When the vacuum gauge 2 shows that the vacuum degree reaches 10 -2 Pa, keep...

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Abstract

The invention discloses a device for releasing and extracting hydrocarbon gases in an inclusion body, the device comprises an inclusion grinding system and a vacuum system; the inclusion grinding system comprises a sample cell and a vacuum blasting hammer; and the vacuum system comprises a vacuum tube and a mechanical pump. The invention also discloses a method for releasing and extracting the hydrocarbon gases in the inclusion body: (1) vacuum detection; (2) sample treatment; (3) gas release, to be more specific, knocking and grinding a sample with the vacuum blasting hammer for 60 min; (4) gas extraction, to be more specific, injecting saturated saline into the sample cell, and removing the gases released by the inclusion body through a gas-tight needle. The device and the method realizethe extraction of gaseous hydrocarbons in the inclusion body, and isotope analysis of the gaseous hydrocarbons in the inclusion body is realized for the first time by subsequent chromatographic-isotope mass spectrometry technique. The sample is ground under vacuum condition, and the sample in the inclusion body can be released at normal temperature, isotope fractionation effect can be prevented,and the accuracy of sample testing can be ensured.

Description

technical field [0001] The invention relates to a device and method for releasing and extracting hydrocarbon gas in inclusions, in particular to the release, extraction and carbon isotope analysis and testing of hydrocarbon gas carbon isotopes in inclusions. Background technique [0002] Inclusion research is currently one of the most active fields in the field of earth science research, and has been widely used in geoscience fields such as mineral deposits, structural geology, petroleum exploration, fluid migration in the earth's interior, and the evolution process of magmatic rock systems. Studies in recent years have shown that the isotope values ​​of hydrocarbon gases in inclusions are of great significance for the study of accumulation periods and properties of hydrocarbons. Realizing the detection of isotope values ​​of hydrocarbon gases in inclusions is the most important issue. [0003] At present, related work on gas isotopes in fluid inclusions has been carried ou...

Claims

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Application Information

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IPC IPC(8): G01N30/88G01N1/28
CPCG01N1/286G01N30/88G01N2001/2866
Inventor 翟正王学军李祥臣刘庆李政张守春綦艳丽林晶鲍燕王大洋
Owner CHINA PETROLEUM & CHEM CORP
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