CN111595931B - Method for judging condensate gas invasion degree by utilizing aromatic compounds - Google Patents
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- 150000001491 aromatic compounds Chemical class 0.000 title claims abstract description 87
- 230000009545 invasion Effects 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 65
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims abstract description 22
- 238000001819 mass spectrum Methods 0.000 claims description 44
- 238000005040 ion trap Methods 0.000 claims description 31
- 238000004445 quantitative analysis Methods 0.000 claims description 16
- 230000008020 evaporation Effects 0.000 claims description 14
- 238000001704 evaporation Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 13
- FCEHBMOGCRZNNI-UHFFFAOYSA-N 1-benzothiophene Chemical compound C1=CC=C2SC=CC2=C1 FCEHBMOGCRZNNI-UHFFFAOYSA-N 0.000 claims description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 239000011593 sulfur Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 49
- 239000000203 mixture Substances 0.000 description 12
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 7
- 125000004432 carbon atom Chemical class C* 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000006482 condensation reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 125000005842 heteroatom Chemical group 0.000 description 2
- 238000000534 ion trap mass spectrometry Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000037427 ion transport Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
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- G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
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Abstract
The invention provides a method for judging condensate gas invasion degree by using aromatic hydrocarbon compounds, wherein the method for judging condensate gas invasion degree by using aromatic hydrocarbon compounds comprises the following steps: (1) After adding an internal standard into the condensate, ionizing aromatic compounds in the condensate; (2) Quantitatively analyzing the aromatic compounds in the condensate oil; (3) And judging the degree of condensate gas invasion according to the content of aromatic hydrocarbon compounds in the condensate. The method provided by the invention has low dependence on personal experience, and can accurately determine the difference of gas invasion degrees of different condensate oil from the petroleum histology angle by utilizing the content of aromatic compounds.
Description
Technical Field
The invention relates to a method for judging condensate gas invasion degree by utilizing aromatic hydrocarbon compounds, belonging to the technical field of petroleum sample analysis.
Background
Dan Youzu the technology is a basic technology for analyzing and predicting the composition, physical properties and reactivity of crude oil and petroleum products from the molecular level by detailed composition analysis technology and molecular reaction modeling technology (see: song Jinyu, established; petrochemical technology and its trend, contemporary chemical industry, 2014, 43 (8): 1498-1501).
The gas invasion will change the phase of the oil and gas in the reservoir. How to evaluate the gas invasion degree of condensate oil has important significance for oil reservoir evaluation and development scheme formulation. The gas invasion degree judging method of condensate is not established at present, and only a few documents refer to judging whether gas invasion is affected or not by utilizing the content of adamantane which is a special alkane (see: energy Fuels 2019,33,2,968-978), and the paper uses full-two-dimensional gas phase flight time mass spectrum to carry out qualitative and quantitative analysis on adamantane in crude oil for judging the gas invasion intensity suffered by the crude oil. However, adamantane is not present in all crude oils, so the range of application of the method is limited to crude oils containing adamantane compounds.
Because determining the extent of condensate gas invasion is one of the bases of oil and gas exploration and development, besides the research on the mechanism of condensate gas invasion, attention of people in the field on the extent of condensate gas invasion is becoming more and more compact at present, but existing methods for determining the extent of condensate gas invasion in the field are basically all judged by means of personal experiences of different professional technicians, and due to complexity and variability of the extent of condensate gas invasion, determining the extent of condensate gas invasion through empirical judgment often leads to inaccurate judgment, so that there is a great need in the field to establish a method for determining the extent of condensate gas invasion with low dependence on personal experiences.
Disclosure of Invention
In order to solve the above-mentioned drawbacks and disadvantages, an object of the present invention is to provide a method for determining extent of condensate invasion by using aromatic compounds. The method has low dependence on personal experience, and can accurately determine the gas invasion degree difference of different condensate oil from the petroleum histology angle by utilizing the content of aromatic compounds.
In order to achieve the above object, the present invention provides a method for judging a condensate invasion degree using an aromatic compound, wherein the method for judging a condensate invasion degree using an aromatic compound comprises:
(1) After adding an internal standard into the condensate, ionizing aromatic compounds in the condensate;
(2) Quantitatively analyzing the aromatic compounds in the condensate oil;
(3) And judging the degree of condensate gas invasion according to the content of aromatic hydrocarbon compounds in the condensate.
In the above method, preferably, the amount of the condensate is less than 100mg.
In the above-described method, preferably, the internal standard comprises d 8-dibenzothiophene or d 10-naphtho [2,1-b ] benzothiophene.
In the above method, preferably, the mass ratio of the internal standard to the condensate is 1:1000000-1:10000000.
In the above-described method, preferably, in the step (1), the aromatic compound in the condensate is ionized using an atmospheric pressure photoionization source.
In the above-described method, preferably, the atmospheric pressure photoionization source evaporation temperature is 200 to 250 ℃.
Wherein, the evaporation temperature of the atmospheric pressure photoelectric ionization source is set to be 200-250 ℃ so as to avoid the condensation reaction of aromatic hydrocarbon compounds when the temperature exceeds 250 ℃ as much as possible, thereby influencing the analysis result.
In the above method, preferably, in step (2), the aromatic compounds in the condensate are quantitatively analyzed by fourier transform ion trap mass spectrometry.
In the above method, preferably, the molecular weight detected by fourier transform ion trap mass spectrometry is in the range 180-900.
Wherein the molecular weight range detected by the Fourier transform ion trap mass spectrum is 180-900, so that the interference of the surfactant with the molecular weight smaller than 180 can be avoided.
In the above method, preferably, the ion transport tube temperature of the fourier transform ion trap mass spectrum is 200-250 ℃.
Wherein, the ion transmission tube temperature of the Fourier transform ion trap mass spectrum is 200-250 ℃, so that the condensation reaction of aromatic compounds at the temperature exceeding 250 ℃ can be avoided as much as possible, and the analysis result is influenced.
In the above-described method, preferably, the time for quantitative analysis is less than 30 minutes.
In the above method, preferably, the lower limit of detection of aromatic compounds during the quantitative analysis is 0.01ppm.
In the above-described method, preferably, the aromatic hydrocarbon compound includes an unsubstituted aromatic hydrocarbon compound and a sulfur atom-substituted (sulfur atom-substituted carbon atom) -aromatic hydrocarbon compound.
In the above method, preferably, in the step (3), determining the extent of condensate invasion according to the content W of the aromatic compound in the condensate includes:
when W >800.0ppm, the condensate is not gas-invaded, i.e. its extent of gas invasion is absent;
when W is more than or equal to 500.0ppm and less than or equal to 800.0ppm, the degree of condensate gas invasion is slight;
when the W is less than or equal to 300.0ppm and less than 500.0ppm, the condensate oil gas invasion degree is medium;
when 200.0ppm is less than or equal to W <300.0ppm, the condensate invasion degree is serious;
the extent of condensate invasion is extremely severe when W <200.0 ppm.
In the method, the atmospheric pressure photoionization source and the Fourier transform ion trap mass spectrum are conventional equipment, and besides the evaporation temperature of the atmospheric pressure photoionization source, the molecular weight range detected by the Fourier transform ion trap mass spectrum and the ion transmission tube temperature of the Fourier transform ion trap mass spectrum, other parameters of the atmospheric pressure photoionization source and the Fourier transform ion trap mass spectrum can be reasonably set by a person skilled in the art according to the actual requirements of the site to carry out ionization and quantitative analysis, so long as the aim of the invention can be realized.
The method for judging the condensate oil gas invasion degree by using the aromatic hydrocarbon compounds provided by the invention has low dependence on personal experience, and can accurately determine the gas invasion degree difference of different condensate oil from the petroleum histology angle by using the aromatic hydrocarbon compound content.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for the description of the embodiments will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a mass spectrum obtained in example 5 of the present invention.
FIG. 2 is a graph showing the relationship between DBE and the plot of the number of carbon atoms c of a conventional aromatic compound (conventional aromatic hydrocarbon, non-heteroatom-substituted aromatic compound, ccHh) in example 5 of the present invention.
FIG. 3 is a graph showing the relationship between DBE and the number of carbon atoms c of sulfur-containing aromatic compounds (sulfur-containing aromatics, ccHhSs) in example 5 of the present invention.
Detailed Description
In order to make the technical features, objects and advantageous effects of the present invention more clearly understood, the technical aspects of the present invention will now be described in detail with reference to the following specific examples, but should not be construed as limiting the scope of the present invention.
Example 1
The embodiment provides a method for judging condensate invasion degree by utilizing aromatic compounds, wherein the method comprises the following steps of:
adding 1.0 mu g of d 8-dibenzothiophene into 1.0g of condensate oil (recorded as condensate oil A) taken from Tarim oil field round 7-5-1 well, and ionizing aromatic hydrocarbon compounds in the condensate oil by using an atmospheric pressure photoelectric ionization source, wherein the evaporation temperature of the atmospheric pressure photoelectric ionization source is 200-250 ℃;
quantitatively analyzing aromatic compounds in condensate by using a Fourier transform ion trap mass spectrum to obtain molecular composition characteristics and content of the aromatic compounds in the condensate (content data can be obtained by referring to a corresponding method in the embodiment 5), wherein the molecular weight range detected by the Fourier transform ion trap mass spectrum is 180-900, and the temperature of an ion transmission tube of the mass spectrum in quantitative analysis is 200-250 ℃;
judging the degree of condensate gas invasion according to the following standard according to the content W of aromatic compounds in condensate gas;
when W >800.0ppm, the condensate is not gas-invaded, i.e. its extent of gas invasion is absent;
when W is more than or equal to 500.0ppm and less than or equal to 800.0ppm, the degree of condensate gas invasion is slight;
when the W is less than or equal to 300.0ppm and less than 500.0ppm, the condensate oil gas invasion degree is medium;
when 200.0ppm is less than or equal to W <300.0ppm, the condensate invasion degree is serious;
the extent of condensate invasion is extremely severe when W <200.0 ppm.
In this example, the content of aromatic compounds in the condensate a and the gas invasion degree determination result of the condensate a are shown in table 1 below.
Example 2
The embodiment provides a method for judging condensate invasion degree by utilizing aromatic compounds, wherein the method comprises the following steps of:
adding 1.0 mug of d 8-dibenzothiophene into 2.5g of condensate oil (recorded as condensate oil B) taken from Tarim oilfield wheel old 4 well, and ionizing aromatic compounds in the condensate oil by using an atmospheric pressure photoelectric ionization source, wherein the evaporation temperature of the atmospheric pressure photoelectric ionization source is 200-250 ℃;
quantitatively analyzing aromatic compounds in condensate by using a Fourier transform ion trap mass spectrum to obtain molecular composition characteristics and content of the aromatic compounds in the condensate (content data can be obtained by referring to a corresponding method in the embodiment 5), wherein the molecular weight range detected by the Fourier transform ion trap mass spectrum is 180-900, and the temperature of an ion transmission tube of the mass spectrum in quantitative analysis is 200-250 ℃;
the extent of condensate invasion was judged according to the criteria in example 1 above based on the content of aromatic compounds in the condensate.
In this example, the content of aromatic compounds in the condensate B and the gas invasion degree judgment result of the condensate B are shown in table 1 below.
Example 3
The embodiment provides a method for judging condensate invasion degree by utilizing aromatic compounds, wherein the method comprises the following steps of:
adding 1.0 mug of d 8-dibenzothiophene into 3.5g of condensate oil (recorded as condensate oil C) taken from Tarim oilfield wheel ancient 101 well, and ionizing aromatic compounds in the condensate oil by using an atmospheric pressure photoelectric ionization source, wherein the evaporation temperature of the atmospheric pressure photoelectric ionization source is 200-250 ℃;
quantitatively analyzing aromatic compounds in condensate by using a Fourier transform ion trap mass spectrum to obtain molecular composition characteristics and content of the aromatic compounds in the condensate (content data can be obtained by referring to a corresponding method in the embodiment 5), wherein the molecular weight range detected by the Fourier transform ion trap mass spectrum is 180-900, and the temperature of an ion transmission tube of the mass spectrum in quantitative analysis is 200-250 ℃;
the extent of condensate invasion was judged according to the criteria in example 1 above based on the content of aromatic compounds in the condensate.
In this example, the content of aromatic compounds in the condensate C and the determination result of the degree of gas invasion of the condensate C are shown in Table 1 below.
Example 4
The embodiment provides a method for judging condensate invasion degree by utilizing aromatic compounds, wherein the method comprises the following steps of:
adding 1.0 mug of D8-dibenzothiophene into 4.6g of condensate oil (recorded as condensate oil D) taken from the south 10 well of a Tarim oil field, and ionizing aromatic compounds in the condensate oil by using an atmospheric pressure photoelectric ionization source, wherein the evaporation temperature of the atmospheric pressure photoelectric ionization source is 200-250 ℃;
quantitatively analyzing aromatic compounds in condensate by using a Fourier transform ion trap mass spectrum to obtain molecular composition characteristics and content of the aromatic compounds in the condensate (content data can be obtained by referring to a corresponding method in the embodiment 5), wherein the molecular weight range detected by the Fourier transform ion trap mass spectrum is 180-900, and the temperature of an ion transmission tube of the mass spectrum in quantitative analysis is 200-250 ℃;
the extent of condensate invasion was judged according to the criteria in example 1 above based on the content of aromatic compounds in the condensate.
In this example, the content of aromatic compounds in the condensate D and the gas invasion degree determination result of the condensate D are shown in table 1 below.
Example 5
The embodiment provides a method for judging condensate invasion degree by utilizing aromatic compounds, wherein the method comprises the following steps of:
adding 1.0 mug of d 8-dibenzothiophene into 5.9g of condensate oil (recorded as condensate oil E) taken from Tarim oilfield wheel old 2 well, and ionizing aromatic compounds in the condensate oil by using an atmospheric pressure photoelectric ionization source, wherein the evaporation temperature of the atmospheric pressure photoelectric ionization source is 200-250 ℃;
quantitatively analyzing aromatic compounds in condensate oil by utilizing a Fourier transform ion trap mass spectrum, wherein the molecular weight range detected by the Fourier transform ion trap mass spectrum is 180-900, the temperature of an ion transmission tube of the mass spectrum in quantitative analysis is 200-250 ℃, and the obtained mass spectrum is shown in figure 1; because the Fourier transform ion trap mass spectrum can accurately acquire the accurate molecular weight of the aromatic compound, the molecular formula of the accurate aromatic compound can be acquired according to the accurate molecular weight and is CcHhSs or CcHh (c, h and s are positive integers), and the equivalent double bond number DBE=c- (h/2) +1 can be calculated according to the accurate molecular weight;
the DBE of a conventional aromatic compound (an aromatic compound not substituted with a hetero atom, ccHh) is plotted against the number c of carbon atoms thereof, as shown in FIG. 2;
the DBE of the sulfur-containing aromatic compounds (CcHhSs) is plotted with the number of carbon atoms c, and is shown in FIG. 3;
finally, counting all conventional aromatic compounds which are not substituted by hetero atoms in the graph 2 and all parts of sulfur-containing aromatic compounds DBE which are not less than 4 in the graph 3, and normalizing the parts with an internal standard substance with known content to obtain 577.37ppm of all aromatic compounds in the embodiment;
the extent of condensate invasion was judged according to the criteria in example 1 above based on the content of aromatic compounds in the condensate.
In this example, the determination results of the gas invasion degree of the condensate E as to the content of the aromatic compounds in the condensate E are shown in table 1 below.
Example 6
The embodiment provides a method for judging condensate invasion degree by utilizing aromatic compounds, wherein the method comprises the following steps of:
adding 1.0 mug of d 10-naphtho [2,1-b ] benzothiophene into 6.9g of condensate oil (recorded as condensate oil F) taken from Tarim oil field round 11 well, and ionizing aromatic hydrocarbon compounds in the condensate oil by utilizing an atmospheric pressure photoionization source, wherein the evaporation temperature of the atmospheric pressure photoionization source is 200-250 ℃;
quantitatively analyzing aromatic compounds in condensate by using a Fourier transform ion trap mass spectrum to obtain molecular composition characteristics and content of the aromatic compounds in the condensate (content data can be obtained by referring to a corresponding method in the embodiment 5), wherein the molecular weight range detected by the Fourier transform ion trap mass spectrum is 180-900, and the temperature of an ion transmission tube of the mass spectrum in quantitative analysis is 200-250 ℃;
the extent of condensate invasion was judged according to the criteria in example 1 above based on the content of aromatic compounds in the condensate.
In this example, the content of aromatic compounds in the condensate oil F and the gas invasion degree judgment result of the condensate oil F are shown in table 1 below.
Example 7
The embodiment provides a method for judging condensate invasion degree by utilizing aromatic compounds, wherein the method comprises the following steps of:
adding 1.0 mug of d 8-dibenzothiophene into 7.8G of condensate oil (recorded as condensate oil G) taken from Tarim oilfield wheel ancient 101 well, and ionizing aromatic compounds in the condensate oil by using an atmospheric pressure photoelectric ionization source, wherein the evaporation temperature of the atmospheric pressure photoelectric ionization source is 200-250 ℃;
quantitatively analyzing aromatic compounds in condensate by using a Fourier transform ion trap mass spectrum to obtain molecular composition characteristics and content of the aromatic compounds in the condensate (content data can be obtained by referring to a corresponding method in the embodiment 5), wherein the molecular weight range detected by the Fourier transform ion trap mass spectrum is 180-900, and the temperature of an ion transmission tube of the mass spectrum in quantitative analysis is 200-250 ℃;
the extent of condensate invasion was judged according to the criteria in example 1 above based on the content of aromatic compounds in the condensate.
In this example, the content of aromatic compounds in the condensate G and the gas invasion degree determination result of the condensate G are shown in table 1 below.
Example 8
The embodiment provides a method for judging condensate invasion degree by utilizing aromatic compounds, wherein the method comprises the following steps of:
adding 1.0 mug of d 10-naphtho [2,1-b ] benzothiophene into 8.5g of condensate oil (recorded as condensate oil H) taken from a Xinjiang oilfield high probe 1 well, and ionizing aromatic hydrocarbon compounds in the condensate oil by using an atmospheric pressure photoionization source, wherein the evaporation temperature of the atmospheric pressure photoionization source is 200-250 ℃;
quantitatively analyzing aromatic compounds in condensate by using a Fourier transform ion trap mass spectrum to obtain molecular composition characteristics and content of the aromatic compounds in the condensate (content data can be obtained by referring to a corresponding method in the embodiment 5), wherein the molecular weight range detected by the Fourier transform ion trap mass spectrum is 180-900, and the temperature of an ion transmission tube of the mass spectrum in quantitative analysis is 200-250 ℃;
the extent of condensate invasion was judged according to the criteria in example 1 above based on the content of aromatic compounds in the condensate.
In this example, the determination results of the gas invasion degree of the condensate H, which are obtained by determining the content of the aromatic compounds in the condensate H, are shown in table 1 below.
Example 9
The embodiment provides a method for judging condensate invasion degree by utilizing aromatic compounds, wherein the method comprises the following steps of:
adding 1.0 mug of d 10-naphtho [2,1-b ] benzothiophene into 9.5g of condensate oil (recorded as condensate oil I) taken from a Qinghai oilfield reed 2 well, and ionizing aromatic hydrocarbon compounds in the condensate oil by using an atmospheric pressure photoionization source, wherein the evaporation temperature of the atmospheric pressure photoionization source is 200-250 ℃;
quantitatively analyzing aromatic compounds in condensate by using a Fourier transform ion trap mass spectrum to obtain molecular composition characteristics and content of the aromatic compounds in the condensate (content data can be obtained by referring to a corresponding method in the embodiment 5), wherein the molecular weight range detected by the Fourier transform ion trap mass spectrum is 180-900, and the temperature of an ion transmission tube of the mass spectrum in quantitative analysis is 200-250 ℃;
the extent of condensate invasion was judged according to the criteria in example 1 above based on the content of aromatic compounds in the condensate.
In this example, the determination results of the gas invasion degree of the condensate I as to the content of the aromatic compounds in the condensate I are shown in table 1 below.
Example 10
The embodiment provides a method for judging condensate invasion degree by utilizing aromatic compounds, wherein the method comprises the following steps of:
adding 1.0 mu g of d 8-dibenzothiophene into 10.0g of condensate oil (recorded as condensate oil J) taken from a dam 81 well in a southwest oil and gas field, and ionizing aromatic compounds in the condensate oil by using an atmospheric pressure photoionization source, wherein the evaporation temperature of the atmospheric pressure photoionization source is 200-250 ℃;
quantitatively analyzing aromatic compounds in condensate by using a Fourier transform ion trap mass spectrum to obtain molecular composition characteristics and content of the aromatic compounds in the condensate (content data can be obtained by referring to a corresponding method in the embodiment 5), wherein the molecular weight range detected by the Fourier transform ion trap mass spectrum is 180-900, and the temperature of an ion transmission tube of the mass spectrum in quantitative analysis is 200-250 ℃;
the extent of condensate invasion was judged according to the criteria in example 1 above based on the content of aromatic compounds in the condensate.
In this example, the content of aromatic compounds in the condensate J and the gas invasion degree judgment result of the condensate J are shown in table 1 below.
TABLE 1 classifying the contents of aromatic compounds and the degree of gas invasion in condensate A-J
In summary, the method for judging the condensate oil gas invasion degree by using the aromatic compounds provided by the embodiment of the invention has low dependence on personal experience, and can accurately determine the gas invasion degree difference of different condensate oil from the petroleum histology angle by using the aromatic compound content.
The foregoing description of the embodiments of the invention is not intended to limit the scope of the invention, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the invention shall fall within the scope of the patent. In addition, the technical features and the technical features, the technical features and the technical invention can be freely combined for use.
Claims (6)
1. A method for determining condensate invasion degree by using aromatic hydrocarbon compounds, which is characterized in that the method for determining condensate invasion degree by using aromatic hydrocarbon compounds comprises the following steps:
(1) After an internal standard is added into condensate, an atmospheric pressure photoelectric ionization source is utilized to ionize aromatic compounds in the condensate, wherein the evaporation temperature of the atmospheric pressure photoelectric ionization source is 200-250 ℃;
(2) Quantitatively analyzing aromatic hydrocarbon compounds in condensate oil by utilizing a Fourier transform ion trap mass spectrum, wherein the molecular weight range detected by the Fourier transform ion trap mass spectrum is 180-900, and the temperature of an ion transmission tube of the Fourier transform ion trap mass spectrum is 200-250 ℃; the aromatic hydrocarbon compound includes an unsubstituted aromatic hydrocarbon compound and a sulfur atom-substituted aromatic hydrocarbon compound;
(3) Judging the degree of condensate invasion according to the content W of aromatic hydrocarbon compounds in condensate, comprising:
when W >800.0ppm, the condensate is not gas-invaded, i.e. its extent of gas invasion is absent;
when W is more than or equal to 500.0ppm and less than or equal to 800.0ppm, the degree of condensate gas invasion is slight;
when the W is less than or equal to 300.0ppm and less than 500.0ppm, the condensate oil gas invasion degree is medium;
when 200.0ppm is less than or equal to W <300.0ppm, the condensate invasion degree is serious;
the extent of condensate invasion is extremely severe when W <200.0 ppm.
2. The method of claim 1, wherein the condensate is used in an amount of less than 100mg.
3. The method according to claim 1 or 2, wherein the internal standard comprises d 8-dibenzothiophene or d 10-naphtho [2,1-b ] benzothiophene.
4. A method according to claim 3, wherein the mass ratio of the internal standard to the condensate is 1:1000000-1:10000000.
5. The method according to claim 1 or 2, characterized in that the quantitative analysis takes less than 30min.
6. The method according to claim 1 or 2, wherein the lower limit of detection of aromatic compounds in the quantitative analysis is 0.01ppm.
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