Determination method of oil sources of high-maturity condensate oil

A determination method and technology for condensate oil, applied in the field of oilfield exploration, can solve the problems of complex oil and gas properties, restricting deep oil and gas exploration and evaluation, and high deep temperature

Active Publication Date: 2016-04-20
PETROCHINA CO LTD
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Problems solved by technology

High temperature, high pressure, and strong organic-inorganic interaction in deep layers lead to high oil and gas maturity in deep layers, loss of conventional biomarker compound information, and inability to identify the source of oil and gas in deep layers. This is an international problem that restricts deep resource potential evaluation and oil and gas exploration.
Especially in the Tarim Basin, the deep oil resources are very rich. At present, the oil and gas properties of the Ordovician in the main exploration strata are very complex. Evaluation

Method used

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Embodiment 1

[0022] This embodiment provides a method for determining the source of highly mature condensate oil, the method comprising the following steps:

[0023] Step 1. Select a highly mature crude oil sample (ZS1C crude oil) in the Tazhong area of ​​the Tarim Basin, and perform comprehensive two-dimensional gas chromatography / time-of-flight mass spectrometry (GC×GC-TOFMS) and comprehensive two-dimensional gas chromatography-hydrogen flame ionization detector (GC ×GC-FID) for analysis and compound detection, according to the characteristic ions m / z=168, 182, 192 are thiomonoadamantane compounds, and the characteristic ions m / z=206, 220 are thiodiamantane compounds , Selected ions m / z136, 135, 149, 163, 177, 191 are monoadamantane series compounds; after testing, the oil sample contains characteristic biomarker compounds: thiomonoadamantane compounds and thiodiamantane compounds .

[0024] Step 2, separation and enrichment of thioadamantane compounds (methylation and demethylation pro...

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Abstract

The invention provides a determination method of oil sources of high-maturity condensate oil. The method comprises the following steps: (1) an oil sample undergoes analysis and detection so as to determine whether the oil sample contains a thioadamantane compound; (2) the oil sample containing the thioadamantane compound undergoes enrichment of the thioadamantane compound; and (3) the enriched thioadamantane compound undergoes sulfur isotope testing, and the test result is compared with known sulfur isotope data of source sequence sulfate so as to determine the oil source of the oil sample. By the determination method of oil sources of high-maturity condensate oil, oil sources of condensate oil at high maturity stage are determined by determining the unique factor in condensate oil at high maturity stage. Thus, the blank that oil sources of high-maturity condensate oil cannot be determined in the present petroleum industry is filled up. By determining oil sources of high-maturity condensate oil, major hydrocarbon source rocks can be truly and objectively found and key exploration target series of strata and resources potential are determined.

Description

technical field [0001] The invention belongs to the field of oil field exploration, and in particular relates to a method for determining the oil source of highly mature condensate oil. Background technique [0002] Deep oil and gas is the main field of global oil and gas exploration in the future. High temperature, high pressure, and strong organic-inorganic interaction in deep layers lead to high oil and gas maturity in deep layers, loss of conventional biomarker compound information, and inability to identify the source of oil and gas in deep layers. This is an international problem that restricts deep resource potential evaluation and oil and gas exploration. Especially in the Tarim Basin, the deep oil resources are very rich. At present, the oil and gas properties of the Ordovician in the main exploration strata are very complex. evaluate. Contents of the invention [0003] In order to overcome the above problems, the object of the present invention is to provide a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/14
CPCG01N30/02G01N30/14G01N2030/025
Inventor 朱光有
Owner PETROCHINA CO LTD
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