A method for measuring heavy component content in black oil

Abstract

The invention discloses a method for measuring the content of heavy components in black oil. The method firstly removes water and impurities in the black oil sample, and after passing the test, it is diluted to the sample injection conditions. The parameters of chromatographic column type, inner diameter, and column temperature are preferably set. Chromatographic conditions were followed by chromatographic analysis of the original black oil sample, followed by addition of C 12 Enter the internal standard sample, and calculate C through two groups of result processing 36+ Heavy component content, so as to obtain the total component content of black oil hydrocarbons. The present invention improves its heavy component analysis on the basis of the GPA 2186 standard. For the first time, it adopts the comparison processing of two sets of parallel data with and without internal standard, and uses the internal standard difference method to calculate the heavy component content, extending the The understanding of the carbon number distribution of black oil hydrocarbons has realized the effective analysis of black oil samples.

Description

technical field [0001] The invention belongs to the technical field of crude oil component measurement, in particular to a method for measuring heavy component content in black oil. Background technique [0002] The traditional method of gas chromatographic analysis of hydrocarbons in black oil adopts the SYT 5779-2008 method for gas chromatographic analysis of petroleum and sedimentary organic matter hydrocarbons, which is to separate the group composition of black oil to obtain saturated hydrocarbons and aromatics, etc. The process inevitably brings errors, so it is difficult to reflect the characteristics of black oil and the original appearance of hydrocarbon components. The high-temperature simulated distillation method based on the boiling point distillation range distribution is rough in describing the carbon number distribution of black oil hydrocarbons, which cannot meet the precision requirements. Therefore, there is still a lack of an effective gas chromatography...

AI Technical Summary

Problems solved by technology

[0004] The heavy components in the black oil that cannot be vaporized will stay in the injection port, and the normalization method cannot be calculated, resulting in a larger result

The reason is that the content of heavy components trapped in the injection port is not known and cannot be converted

Foreign countries do not fully meet the standards for chromatographic analysis of carbon number distribution of black oil hydrocarbons. Western oilfield service companies have improved the GPA 2186 method, which is not published as a core technology and cannot be found in professional literature

Images