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Gas online quantitative mixed supercharging system for Raman spectrometer and operation method thereof

A Raman spectrometer, quantitative mixing technology, used in Raman scattering, instruments, measuring devices, etc.

Active Publication Date: 2015-05-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the defects of the existing online pressurization device in terms of safety, operability and multi-component mixed gas configuration, the present invention provides an online quantitative gas mixing pressurization system and operation method for Raman spectrometers;

Method used

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  • Gas online quantitative mixed supercharging system for Raman spectrometer and operation method thereof
  • Gas online quantitative mixed supercharging system for Raman spectrometer and operation method thereof
  • Gas online quantitative mixed supercharging system for Raman spectrometer and operation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0121] The present invention uses the system combined with a Raman spectrometer to study the relationship between the pressure of methane gas in inclusions and the Raman shift at room temperature, and the purity of methane gas is greater than or equal to 99.999%;

[0122] The specific steps are:

[0123] Step 1, the system construction steps:

[0124] Connect the gas cylinder 1, the pressure reducing valve 2, the volume shifter 3, the medium pressure container 6 and the Raman detection module in sequence, and set the valves at the nodes of each component;

[0125] Step 2, parameter setting steps:

[0126] Experimental parameters are set in the computer 16, the experimental parameters include the pressure value 0.8mpa of the pressure reducing valve 2, the gas volume value required for the experiment, the vacuum pressure value 0.0001mpa in the gas pipeline and a group of Raman spectrum detection The gas pressure value required for the experiment;

[0127] Step 3, vacuum treat...

Embodiment 2

[0161] Using the system combined with GeoFluid FIS20 type capillary synthetic inclusions and Raman spectrometer calibration instrument, the salinity is 0%, 5.5%, 10.0% and 14.3%. 2 The relationship between the saturation solubility of methane gas in O-NaCl solution and the pressure and salinity was studied. The research steps are:

[0162] Step 1, the system construction steps:

[0163] The gas input pipelines are arranged in parallel, and each gas input pipeline is respectively connected to the volume shifter 3, the medium pressure container 6, the high pressure container 7 and the Raman detection module in sequence, and at the node of each component setting said valve;

[0164] Step 2, parameter setting steps:

[0165]Experimental parameters are set in the computer 16, and the experimental parameters include the pressure value of the pressure reducing valve 2, the gas volume value required for the experiment, the vacuum pressure value 0.0001mpa in the gas pipeline, and th...

Embodiment 3

[0205] Using the system combined with Raman spectrometer to prepare 30mol%CO 2 +70mol%N 2 The mixed gas was pressurized to 10Mpa for laser Raman analysis, and mol% is the mole fraction.

[0206] The specific steps are:

[0207] Step 1, the system construction steps:

[0208] Connect the gas cylinder 1, the pressure reducing valve 2, the volume shifter 3, the medium pressure container 6 and the Raman detection module in sequence, and set the valves at the nodes of each component;

[0209] Step 2, parameter setting steps:

[0210] Experimental parameters are set in the computer 16, and the experimental parameters include the pressure value 0.8mpa of the pressure reducing valve 2, the CO required for the experiment. 2 Gas volume value 90ml, N 2 The gas volume value is 210ml, the vacuum pressure value in the gas pipeline is 0.0001mpa, and the gas pressure value required for the Raman spectroscopy detection experiment is 10Mpa;

[0211] Step 3, vacuum treatment steps:

[021...

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Abstract

The invention discloses a gas online quantitative mixed supercharging system for Raman spectrometer and an operation method thereof. The system comprises a gas input module, a supercharging module, and a gas output module. The gas input module comprises a volume transfer device, a vacuum pump, and at least one gas input pipeline. The gas input pipelines are individually connected to the gas inlet of the volume transfer device, the gas outlet of the volume transfer device is connected to the input end of the pressure container of the supercharging module, and the output end of the pressure container is connected to the gas output module. By introducing gas in different pipelines into the volume transfer device in sequence, the quantitative gas can be obtained, the quantitative gas can be evenly mixed and supercharged in the pressure container, and the quantitative mixed gas can be Raman-analyzed by a Raman detection module. The system has the advantages of simple and convenient operation, high safety, and well-sealed gas pipeline, through the system the relationships among the Raman spectrum, pressure and composition of fluids composed of different components can be studied more precisely, and thus the system has a high practical value for scientific research.

Description

technical field [0001] The invention relates to a fluid ratio simulation experiment device in the field of oil and gas exploration research, in particular to an online gas quantitative mixing pressurization system and an operation method for a Raman spectrometer. Background technique [0002] Laser Raman can non-destructively analyze the gas, liquid, and solid phase components of a single inclusion. At present, the calibration of laser Raman shift values ​​in the geological field is mainly carried out through single crystal silicon standard samples. Since the inclusions formed in the process of oil and gas accumulation are mainly composed of fluids, it is necessary to establish a method for measuring the relationship between the composition and pressure of different types of fluid inclusions and the parameters related to Raman spectroscopy, and establish a corresponding calibration system. [0003] Such as figure 1 As shown, the paper "Raman Spectroscopy in-situ Observation...

Claims

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Application Information

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IPC IPC(8): G01N21/65G01N21/01
Inventor 施伟军徐旭辉席斌斌蒋宏张渠李志明王强
Owner CHINA PETROLEUM & CHEM CORP
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