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Method for determining gas cut degree of condensate oil

A determination method and technology for condensate oil, applied in the direction of analyzing materials, material analysis by electromagnetic means, measuring devices, 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

[0004]Because determining the extent of condensate oil and gas invasion is one of the foundations of oil and gas exploration and development, in addition to the research on the mechanism of condensate oil and gas invasion, currently The degree of condensate oil and gas invasion is getting more and more attention. However, the existing methods for determining the degree of condensate oil and gas invasion in this field basically rely on the personal experience of different professional technicians. Due to the complexity of the degree of condensate oil and gas invasion and the Therefore, it is urgent to establish a method for determining the degree of condensate oil and gas invasion that is less dependent on personal experience in this field.

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  • Method for determining gas cut degree of condensate oil
  • Method for determining gas cut degree of condensate oil
  • Method for determining gas cut degree of condensate oil

Examples

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Embodiment 1

[0036] This embodiment provides a method for determining the degree of condensate gas invasion, wherein the method includes the following steps:

[0037] Add 0.056 μg of d10-benzo[C]carbazole to 56 mg of condensate oil (referred to as condensate oil A) from Lungu 8-5-1 well in Tarim Oilfield, and use negative ion electrospray ionization source to decompose the condensate The non-basic nitrogen compounds in the oil are ionized, and the evaporation temperature of the negative ion electrospray ionization source is 200-250°C;

[0038] Then use Fourier transform ion trap mass spectrometry to quantitatively analyze the non-basic nitrogen compounds in the condensate oil, and obtain the molecular composition characteristics and content of the non-basic nitrogen compounds in the condensate oil (content data can be obtained with reference to the corresponding method in Example 8) ), wherein the molecular weight range detected by the Fourier transform ion trap mass spectrometer is 200-70...

Embodiment 2

[0047] This embodiment provides a method for determining the degree of condensate gas invasion, wherein the method includes the following steps:

[0048] Add 0.056 μg of d8-carbazole to 106 mg of condensate oil taken from Well Lungu 15 in Tarim Oilfield (denoted as condensate oil B), and use negative ion electrospray ionization source to ionize the non-basic nitrogen compounds in the condensate oil , wherein the evaporation temperature of the negative ion electrospray ionization source is 200-250°C;

[0049] Then use Fourier transform ion trap mass spectrometry to quantitatively analyze the non-basic nitrogen compounds in the condensate oil, and obtain the molecular composition characteristics and content of the non-basic nitrogen compounds in the condensate oil (content data can be obtained with reference to the corresponding method in Example 8) ), wherein the molecular weight range detected by the Fourier transform ion trap mass spectrometer is 200-700, and the ion transfer...

Embodiment 3

[0053] This embodiment provides a method for determining the degree of condensate gas invasion, wherein the method includes the following steps:

[0054] Add 0.056 μg of d8-carbazole to 120 mg of condensate oil taken from Well Lungu 201 in Tarim Oilfield (referred to as condensate oil C), and use negative ion electrospray ionization source to ionize the non-basic nitrogen compounds in the condensate oil , wherein the evaporation temperature of the negative ion electrospray ionization source is 200-250°C;

[0055] Then use Fourier transform ion trap mass spectrometry to quantitatively analyze the non-basic nitrogen compounds in the condensate oil, and obtain the molecular composition characteristics and content of the non-basic nitrogen compounds in the condensate oil (content data can be obtained with reference to the corresponding method in Example 8) ), wherein the molecular weight range detected by the Fourier transform ion trap mass spectrometer is 200-700, and the ion trans...

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Abstract

The invention provides a method for determining the gas cut degree of condensate oil. The method comprises the following steps: (1), adding an internal standard substance into condensate oil, and ionizing a non-alkaline nitrogen compound in the condensate oil; (2), carrying out quantitative analysis on a non-basic nitrogen compound in the condensate oil; and (3), judging the gas cut degree of thecondensate oil according to the content of the non-alkaline nitrogen compound obtained in the (2). The method provided by the invention is low in dependence degree on personal experience, and the gascut degree difference of different condensate oil can be accurately determined from the angle of petromics.

Description

technical field [0001] The invention relates to a method for determining the gas invasion degree of condensate oil, belonging 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] Gas invasion will change the phase state of oil and gas in the reservoir. How to evaluate the degree of gas invasion of condensate oil is of great significance for reservoir evaluation and development plan formulation. At present, the method for judging the degree of gas invasion of condensate oil has not been established, and only a few literatures mention the use of adamantane content to judge wh...

Claims

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Application Information

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IPC IPC(8): G01N27/62
CPCG01N27/62
Inventor 朱光有王萌张志遥李婧菲
Owner PETROCHINA CO LTD
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