Microscopic fluorescence identification method for arene component of oil gas inclusion

Abstract

The invention relates to a microscopic fluorescence identification method for an arene component of a petroleum inclusion. The method comprises the following steps of: quantitatively detecting the arene component of the petroleum inclusion by a laser induced fluorescence spectrum technology under a microscopic environment; acquiring a fluorescence spectrum of fluid in the petroleum inclusion by alaser fluorescence spectrum technology under the microscopic environment; and performing correlation contrastive analysis on fluorescence spectra of a crude oil sample and an extracted oil sample to determine the maximum related oil sample of the fluid in the petroleum inclusion, wherein the arene component content of the maximum related oil sample is similar to the component content of the fluidin the petroleum inclusion. By the method, the samples are subjected to three-dimensional microarea movement, microimaging and computer imaging by microarea positioning and microimaging technologies,so that a single oil gas inclusion sample to be irradiated can be selected and positioned precisely; full fluorescence excitation and full spectrum acquisition corresponding to the arene component inthe selected single oil gas inclusion are realized by tunable laser generation and fluorescence full spectrum acquisition technologies; and the acquired fluorescence spectrum of the arene component of the single oil gas inclusion is subjected to correlation contrastive analysis by a spectrum fingerprint technology and a spectrum multiscale data analysis technology to realize oil source comparisonand determine the relative content of the arene component of the targeted inclusion.

Description

Technical field: [0001] The invention relates to a technology for identifying aromatic components of oil and gas inclusions, that is, a method for identifying oil species by using the microscopic fluorescence spectrum of oil and gas inclusions as a fingerprint feature. Background technique: [0002] Fluid inclusions are ancient fluids that trap various geochemical information of previous geological ages, and their material composition is the code of related geological processes. One of the main purposes of studying fluid inclusions is to obtain various data and information to explain various geological processes in the studied crust and mantle through qualitative and quantitative analysis of the inclusions’ ancient fluids. With the development of computing technology, the analysis of inclusions has gradually become the most active field of earth science research. [0003] Previous studies mostly focused on the analysis of inclusion groups and the research and technology of ...

AI Technical Summary

Problems solved by technology

Mainly because the color and intensity of the fluorescence depend on the type and content of the oil-gas fluid in the inclusions and the size of the inclusions. At the same time, under the irradiation of ultraviolet light, gums, epoxy resins, lint debris and some pollutants, They can also fluoresce, and there is a large error in judging maturity based on the visual effect of color alone. Spectral analysis can better distinguish oil and gas types and impurity fluorescence, which can be used as an effective method for accurate judgment. There are some foreign countries on fluorescence microspectral technology. Reports are mainly limited to emission spectra excited by a single wavelength or synchronous spectra using continuous light sources (such as xenon lamps). Although they have the ability to distinguish the differences between inclusions with similar fluorescence characteristics, there are problems such as single data information and weak fluorescence signals. , so that its importance in correlation research cannot be well reflected. These articles only involve the effectiveness and significance of this method, and no relevant experimental devices and data analysis results have been seen.

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