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Method for judging biodegradation degree of thickened oil according to petromics

A technology of biodegradation and heavy oil, applied in scientific instruments, measuring devices, material analysis through electromagnetic means, etc., can solve the problems of inaccurate judgment and low dependence, and achieve the effect of low dependence on personal experience

Pending Publication Date: 2020-08-28
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Because determining the degree of biodegradation of heavy oil is one of the foundations of oil and gas exploration, in addition to the research on the biodegradation mechanism of heavy oil, those skilled in the art are paying more and more attention to the degree of biodegradation of heavy oil. Some methods to determine the degree of biodegradation of heavy oil basically rely on the personal experience of different professional technicians to judge. Due to the complexity and variability of the degree of biodegradation of heavy oil, it often leads to judgment Therefore, there is an urgent need in this field to establish a method for determining the degree of biodegradation of heavy oil that is less dependent on personal experience

Method used

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  • Method for judging biodegradation degree of thickened oil according to petromics
  • Method for judging biodegradation degree of thickened oil according to petromics
  • Method for judging biodegradation degree of thickened oil according to petromics

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Embodiment 1

[0033] This embodiment provides a method for judging the degree of biodegradation of heavy oil according to petroleum omics, wherein the method includes the following steps:

[0034] Add 0.056 μg of d8-carbazole to 56 mg of heavy oil from Xinken 7004 well in Tarim Oilfield (referred to as heavy oil A), and use negative ion electrospray ionization source to ionize the non-basic nitrogen compounds in the heavy oil. The evaporation temperature of the electrospray ionization source is 200-250°C;

[0035] Then utilize Fourier transform ion trap mass spectrometry to quantitatively analyze the non-basic nitrogen compounds in the heavy oil, and obtain the molecular composition characteristics and content of the non-basic nitrogen compounds in the heavy oil (the content data can be obtained with reference to the corresponding method in Example 8), The molecular weight range detected by the Fourier transform ion trap mass spectrometer is 200-700, and the temperature of the ion transfer ...

Embodiment 2

[0044] This embodiment provides a method for judging the degree of biodegradation of heavy oil based on petroleum omics, wherein the method includes the following steps:

[0045] Add 0.056 μg of d8-carbazole to 111 mg of heavy oil (referred to as heavy oil B) from Xinken 8-1X well in Tarim Oilfield, and use negative ion electrospray ionization source to ionize the non-basic nitrogen compounds in the heavy oil, The evaporation temperature of the negative ion electrospray ionization source is 200-250°C;

[0046] Then utilize Fourier transform ion trap mass spectrometry to quantitatively analyze the non-basic nitrogen compounds in the heavy oil, and obtain the molecular composition characteristics and content of the non-basic nitrogen compounds in the heavy oil (the content data can be obtained with reference to the corresponding method in Example 8), The molecular weight range detected by the Fourier transform ion trap mass spectrometer is 200-700, and the temperature of the ion...

Embodiment 3

[0050] This embodiment provides a method for judging the degree of biodegradation of heavy oil according to petroleum omics, wherein the method includes the following steps:

[0051] Add 0.056 μg of d8-carbazole to 156 mg of heavy oil (referred to as heavy oil C) from the Ha 15-8 well in the Tarim Oilfield, and use an anion electrospray ionization source to ionize the non-basic nitrogen compounds in the heavy oil, wherein The evaporation temperature of negative ion electrospray ionization source is 200-250℃;

[0052] Then utilize Fourier transform ion trap mass spectrometry to quantitatively analyze the non-basic nitrogen compounds in the heavy oil, and obtain the molecular composition characteristics and content of the non-basic nitrogen compounds in the heavy oil (the content data can be obtained with reference to the corresponding method in Example 8), The molecular weight range detected by the Fourier transform ion trap mass spectrometer is 200-700, and the temperature of ...

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Abstract

The invention provides a method for judging the biodegradation degree of thickened oil according to petromics. The method comprises the following steps: (1), adding an internal standard substance intothickened oil, and ionizing a non-alkaline nitrogen compound in the thickened oil; (2), carrying out quantitative analysis on the non-alkaline nitrogen compound in the thickened oil; and (3), judgingthe biodegradation degree of the thickened oil according to the content of the non-alkaline nitrogen compound obtained in the (2). The method provided by the invention has low dependence on personalexperience, and can accurately determine the biodegradation degree difference of different thickened oils from the angle of petromics.

Description

technical field [0001] The invention relates to a method for judging the biodegradation degree of heavy oil according to petroleum omics, and belongs to the technical field of petroleum sample analysis. Background technique [0002] Petroleum omics technology is the basic technology to analyze and predict its composition, physical properties and reactivity from the molecular level through detailed composition analysis technology and molecular reaction modeling technology (see: Song Jinyu, Established; Petroleum Omics Technology and Its Trends, Modern Chemical Industry, 2014, 43(8): 1498-1501). [0003] In most cases, the change in the composition of heavy oil is mainly caused by biodegradation. According to Hunt statistics, about 1 / 5 of the heavy oil in the world is destroyed by bacteria, and another 1 / 5 of the heavy oil has been transformed by bacteria (see: Hunt JM. Petroleum geochemistry and geology [M]. San Franciso, 1979 :617-618). Since Williams et al. (see: Rubinst...

Claims

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Application Information

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IPC IPC(8): G01N27/62
CPCG01N27/62Y02A20/20
Inventor 王萌朱光有张志遥陈志勇
Owner PETROCHINA CO LTD
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