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A device and method for determining a critical petroleum inclusion reservoir forming moment based on a time-resolved fluorescence spectrum

A technology for time-resolved fluorescence and petroleum inclusions, applied in fluorescence/phosphorescence, measurement devices, analytical materials, etc., can solve the problems of spectral overlap and the difficulty of extracting organic components of a single petroleum inclusion, and achieve the effect of solving spectral overlap

Active Publication Date: 2017-10-24
WEIFANG UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a device and method for determining the critical moment of petroleum inclusion accumulation based on time-resolved fluorescence spectroscopy, which can increase the fluorescence intensity of different polycyclic aromatic hydrocarbons on the basis of three-dimensional fluorescence spectrum information. The information that changes with time constitutes a multi-dimensional fluorescence spectrum, which can effectively solve the problem of spectral overlap, and truly realize the component analysis of polycyclic aromatic hydrocarbons in inclusions, so as to determine the critical moment of oil inclusion accumulation; Problems such as difficulty in extracting organic components of petroleum inclusions

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  • A device and method for determining a critical petroleum inclusion reservoir forming moment based on a time-resolved fluorescence spectrum

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Embodiment 1

[0043] Example 1 A method for determining the critical moment of oil inclusion accumulation based on time-resolved fluorescence spectroscopy

[0044] like figure 1 As shown, the present invention provides a method for determining the critical moment of oil inclusion accumulation based on time-resolved fluorescence spectroscopy, comprising the following steps:

[0045] Step 1: The construction steps of the laser-induced time-resolved fluorescence spectroscopy measurement system;

[0046] Step 2: Data mining step of multi-dimensional spectral data of "microscopic oil" and "macroscopic oil" based on time-resolved fluorescence;

[0047] Step 3: The step of determining the critical moment of oil and gas accumulation.

[0048] in:

[0049] Step 1: The construction steps of the laser-induced time-resolved fluorescence spectroscopy measurement system;

[0050] The excitation light emitted by the excitation light source 11 reflects 390nm purple light through the first dichroic mirr...

Embodiment 2

[0067] Example 2 A device for determining the critical moment of oil inclusion accumulation based on time-resolved fluorescence spectroscopy

[0068] like figure 2 As shown, the present invention provides a device for determining the critical moment of oil inclusion accumulation based on time-resolved fluorescence spectroscopy, including: a time-resolved fluorescence spectroscopy measurement system 1 , a time-lapse system 2 , and a microscopic imaging system 3 .

[0069] The time-resolved fluorescence spectrum measurement system 1 includes a laser light source 11, a frequency doubling crystal LBO12, a first dichroic mirror 13, a first prism 14, a fiber coupler 15, a second prism 16, a grating spectrometer 17, a detection device 18, second dichroic mirror 19 .

[0070] Laser light source 11: Since the fluorescence lifetime of crude oil is relatively short, on the order of 1-10 ns, the pulse light source needs to meet the necessary pulse energy and the pulse duration is short,...

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Abstract

A method for determining a critical petroleum inclusion reservoir forming moment based on a time-resolved fluorescence spectrum is disclosed. The method includes a step of building a laser induced time-resolved fluorescence spectrum measuring system; a step of data mining of 'micro-oil' and 'macroscopic-oil' multi-dimensional spectroscopic data based on time-resolved fluorescence; and a step of determining a critical oil and gas reservoir forming moment. A device for determining a critical petroleum inclusion reservoir forming moment based on a time-resolved fluorescence spectrum is also disclosed. The device includes the time-resolved fluorescence spectrum measuring system, a time delay system and a micro-imaging system. Based on three-dimension fluorescence spectrum information, information of fluorescence intensity changes of a plurality of polycyclic aromatic hydrocarbons along with time is increased to form a multi-dimensional fluorescence spectrum, a spectrum overlap problem can be effectively overcome, and component analysis of the polycyclic aromatic hydrocarbons in an inclusion can be achieved in a real sense, thus determining the critical petroleum inclusion reservoir forming moment and overcoming a problem that extraction of organic components in single petroleum inclusion is difficult and other problems.

Description

technical field [0001] The invention relates to a device and method for determining the critical moment of oil inclusion accumulation based on time-resolved fluorescence spectroscopy. Background technique [0002] Petroleum inclusions, as a very special type of fluid inclusions, are the original accumulation fossil samples captured by cement or authigenic minerals during oil and gas migration and accumulation, and sealed in mineral lattice defects or cracks. There is no material exchange with the outside world in the long geological age, so it records various physical and chemical information of the ore-forming medium when the host minerals were formed, and plays an important role in tracing the migration of oil and gas. [0003] Traditionally, the study of oil and gas charging history is mainly based on trap formation time, hydrocarbon generation and expulsion history analysis, and dew point pressure / saturation pressure method. The theoretical basis is basin analysis, oil a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
CPCG01N21/6408G01N2021/6417G01N2201/06113
Inventor 王春艳黄小东樊心民
Owner WEIFANG UNIVERSITY
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