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Oil migration direction tracing method

An oil migration and oil technology, applied in the field of tracer, can solve problems such as loss of target compounds, complex pretreatment, secondary pollution of samples, etc., and achieve the effect of simple and clear identification methods

Active Publication Date: 2016-10-05
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

Because these small molecular compounds are easily affected by biodegradation and water washing, and sample analysis requires complex pretreatment, the treatment process is likely to cause secondary pollution of the sample and loss of target compounds

Method used

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Experimental program
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Embodiment 1

[0045] 1) Oil sample collection:

[0046] Oil samples from the Rimbey-Meadowbrook biological reef chain oil and gas reservoirs in the Upper Devonian in the Western Canada Basin were collected at multiple points. During the collection process, ensure that the crude oil samples are not subject to secondary pollution. After the samples are collected, they are sealed and stored in low-temperature refrigeration.

[0047] 2) Sample analysis:

[0048] Take about 10 mg of crude oil sample and dissolve it in 1 mL of toluene, then take 20 μL of the sample solution and redissolve it in 1 mL of toluene:methanol (1:1 / V:V) mixed solution, add 10 μL of 28 wt% ammonia water to the resulting solution, shake gently to make It was mixed well and then subjected to Fourier transform ion cyclotron resonance mass spectrometry. The analyzer is an American Bruker solariX FT-ICR MS with a magnetic field strength of 12.0T. Using ESI ionization source, negative ion mode. FT-ICR MS main instrument par...

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Abstract

The invention discloses an oil migration direction tracking method. The method comprises the following steps that 1, at least two oil samples same-source oil derived from the same source rock are collected; 2, the samples are analyzed, wherein Fourier transform ion cyclotron resonance mass spectrometry is carried out; 3, data processing is carried out, the carbon number, abundance and DBE structural information of N1S1 compounds are extracted, and the abundance strengths of three kinds of N1S1 compounds with DBE being equal to 14, 15 and 17 respectively; the oil migration direction is determined, wherein according to the abundance strengths of the three kinds of N1S1 compounds with DBE being equal to 14, 15 and 17 respectively, the abundance strength percentages of the three kinds of compounds are calculated respectively and made into a graph to be analyzed, and the abundance strength percentage increasing direction of the N1S1 compound with the DBE being equal to 15 is the oil migration direction.

Description

technical field [0001] The invention relates to a tracing method, in particular to a tracing method in the petroleum field. Background technique [0002] Scholars at home and abroad have done a lot of fruitful work by using various geochemical parameters to study the direction and path of oil and gas migration, and even to calculate the distance of oil and gas migration. Among them, the research on non-hydrocarbon compounds containing N, S, and O heteroatoms has developed rapidly. Scholars at home and abroad have successively developed various N-, S-, and O-containing compounds for the study of oil and gas migration, and successfully extracted a variety of N-, S-, and O-containing compound indicators, which have been obtained in oil and gas exploration practice. It has been widely used and achieved remarkable results. [0003] The organic nitrogen-containing compounds in crude oil mainly appear in the form of neutral (non-basic) pyrrole aromatic compounds, while the basic p...

Claims

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Application Information

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IPC IPC(8): G01N27/62
Inventor 蒋启贵刘鹏黎茂稳申宝剑陶国亮马媛媛宋晓莹
Owner CHINA PETROLEUM & CHEM CORP
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