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Method for judging thermal cracking degree of crude oil

A thermal cracking, crude oil technology, applied in measuring devices, material analysis by electromagnetic means, instruments, etc., can solve the problems of inaccurate judgment and low degree of dependence, and achieve the effect of low degree of dependence on personal experience

Active 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

However, adamantane does not exist in all crude oils, so the application of this method is limited to crude oil containing adamantane compounds
[0004] Because determining the degree of thermal cracking of crude oil is one of the foundations of oil and gas exploration and development, in addition to the research on the mechanism of thermal cracking of crude oil, those skilled in the art are paying more and more attention to the degree of thermal cracking of crude oil. The methods for determining the degree of thermal cracking of crude oil basically rely on the personal experience of different professional technicians to judge. Due to the complexity and variability of the degree of thermal cracking of crude oil, determining the degree of thermal cracking of crude oil through empirical judgment often leads to inaccurate judgments. Therefore, At present, there is an urgent need in this field to establish a method for determining the degree of thermal cracking of crude oil that is less dependent on personal experience

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  • Method for judging thermal cracking degree of crude oil
  • Method for judging thermal cracking degree of crude oil
  • Method for judging thermal cracking degree of crude oil

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The present embodiment provides a method for judging the thermal cracking degree of crude oil, wherein the method comprises the following steps:

[0039] Add 1.0 μg of d8-dibenzothiophene to 1.0 g of crude oil (denoted as crude oil A) taken from Well Shunbei 1 in Tarim Oilfield, and use an atmospheric pressure photoionization source to ionize the aromatic compounds in the crude oil, wherein the atmospheric pressure photoionization source The evaporation temperature is 200-250°C;

[0040] Then use Fourier transform ion trap mass spectrometry to quantitatively analyze aromatic hydrocarbon compounds in crude oil to obtain molecular composition characteristics and content of aromatic hydrocarbon compounds in crude oil (content data can be obtained with reference to the corresponding method in Example 5), wherein Fourier transform ion trap The molecular weight range detected by the mass spectrometer is 180-900, and the temperature of the ion transfer tube of the mass spectro...

Embodiment 2

[0049] The present embodiment provides a method for judging the thermal cracking degree of crude oil, wherein the method comprises the following steps:

[0050] Add 1.0 μg of d8-dibenzothiophene to 2.5 g of crude oil (denoted as crude oil B) taken from Well Shunxi 1 in Tarim Oilfield, and use an atmospheric pressure photoionization source to ionize the aromatic compounds in the crude oil, wherein the atmospheric pressure photoionization source The evaporation temperature is 200-250°C;

[0051] Then use Fourier transform ion trap mass spectrometry to quantitatively analyze aromatic hydrocarbon compounds in crude oil to obtain molecular composition characteristics and content of aromatic hydrocarbon compounds in crude oil (content data can be obtained with reference to the corresponding method in Example 5), wherein Fourier transform ion trap The molecular weight range detected by the mass spectrometer is 180-900, and the temperature of the ion transfer tube of the mass spectrom...

Embodiment 3

[0055] The present embodiment provides a method for judging the thermal cracking degree of crude oil, wherein the method comprises the following steps:

[0056] Add 1.0 μg of d8-dibenzothiophene to 3.6 g of crude oil (denoted as crude oil C) taken from Well Shunnan 1 in Tarim Oilfield, and use an atmospheric pressure photoionization source to ionize the aromatic compounds in the crude oil, wherein the atmospheric pressure photoionization source The evaporation temperature is 200-250°C;

[0057] Then use Fourier transform ion trap mass spectrometry to quantitatively analyze aromatic hydrocarbon compounds in crude oil to obtain molecular composition characteristics and content of aromatic hydrocarbon compounds in crude oil (content data can be obtained with reference to the corresponding method in Example 5), wherein Fourier transform ion trap The molecular weight range detected by the mass spectrometer is 180-900, and the temperature of the ion transfer tube of the mass spectro...

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Abstract

The invention provides a method for judging the thermal cracking degree of crude oil. The method comprises the following steps: (1), adding an internal standard substance into crude oil, and ionizingaromatic hydrocarbon compounds in the crude oil; (2), carrying out quantitative analysis on aromatic hydrocarbon compounds in the crude oil; and (3), judging the thermal cracking degree of the crude oil according to the content of aromatic hydrocarbon compounds in the crude oil. The method provided by the invention has low dependence on personal experience, and can accurately determine the thermalcracking degree difference of different crude oil from the angle of petromics by utilizing the content of aromatic hydrocarbon compounds.

Description

technical field [0001] The invention relates to a method for judging the thermal cracking degree of crude oil, belonging to the technical field of petroleum sample analysis. Background technique [0002] Petroleomics technology regards crude oil and petroleum products as aggregates of molecules, and analyzes and predicts its composition, physical properties and reactivity at the molecular level through detailed composition analysis technology and molecular reaction modeling technology. (Refer to: Song Jinyu, Established; Petroleum Omics Technology and Its Trends, Modern Chemical Industry, 2014, 43(8): 1498-1501). [0003] Thermal cracking can change the phase state of hydrocarbons in the reservoir. How to evaluate the degree of thermal cracking of crude oil is of great significance for reservoir evaluation and development plan formulation. At present, the method for judging the thermal cracking degree of crude oil has not yet been established, and only a few literatures me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/64
CPCG01N27/64
Inventor 朱光有王萌张志遥陈志勇
Owner PETROCHINA CO LTD
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