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Method for dividing macerals by using Raman spectrum parameters

A technology of micro-component and Raman spectroscopy, applied in Raman scattering, material excitation analysis, etc., can solve problems such as identification errors

Active Publication Date: 2021-11-09
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Abstract
  • Description
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Problems solved by technology

In recent years, the Lower Paleozoic marine shale has become a research hotspot. Most of its organic matter is in the high-over-mature stage, and the optical properties of the microscopic components are gradually converging. It is easier to identify errors using traditional manual analysis methods.

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  • Method for dividing macerals by using Raman spectrum parameters
  • Method for dividing macerals by using Raman spectrum parameters
  • Method for dividing macerals by using Raman spectrum parameters

Examples

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Embodiment Construction

[0029] The experimental methods used in the following examples are conventional methods unless otherwise specified.

[0030] The materials and reagents used in the following examples can be obtained from commercial sources unless otherwise specified.

[0031] The experimental instrument used in the following examples is an in Via laser microscopic confocal Raman spectrometer, the laser wavelength is 532nm, the laser power is 10mW, the exposure time is 10s, and the scanning range is 100~3500cm -1 , the number of analysis points for each microcomponent in each sample is 10.

[0032] The steps of the method for utilizing Raman spectral parameters to divide microcomponents provided by the invention are as follows:

[0033] Step 1. Take 10 coal samples of different maturity in the eastern margin of the Ordos Basin as standard samples, and number these 10 standard samples, which are successively standard sample 1, standard sample 2, ... standard sample 9, and standard sample 10;

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Abstract

The invention discloses a method for dividing macerals by using Raman spectrum parameters. According to the method, the description of different macerals is realized by utilizing organic matter laser Raman spectrum data and parameters, which is based on the basic principle that the first-order vibration of carbon molecules of different macerals is different, and the laser Raman spectrum can effectively reflect the first-order vibration condition of the carbon molecules. The method disclosed by the invention solves the problem that time and labor are wasted when the macerals of the vitrinite and the inertinite are distinguished; and the laser Raman spectrum analysis has the advantages of small dosage, short analysis time and the like. The method has good reliability, economical efficiency and universality, and has good application and popularization prospects.

Description

technical field [0001] The invention relates to the application of laser Raman spectrum technology in the field of petroleum geology, in particular to a method for dividing microscopic components by using Raman spectrum parameters. Background technique [0002] The classification of microscopic components is of great significance to the identification of organic matter types in source rocks and the study of pores in shale gas reservoirs. In recent years, research methods have developed from optical microscopy to scanning electron microscopy with higher resolution. The analysis of organic microscopic components has always been dominated by traditional manual identification, and the impact of human factors such as the quality of light sheet polishing and differences in researchers' ability Big. In recent years, the Lower Paleozoic marine shale has become a research hotspot. Most of its organic matter is in the high-over-mature stage, and the optical properties of the microsco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
CPCG01N21/65
Inventor 高志伟李美俊张聪肖洪方镕慧秦婧高志宏
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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