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Determination method of content of monosulfonate and polysulfonate in petroleum sulfonate sample

A technology of petroleum sulfonate and monosulfonate, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problem that the content of monosulfonate and polysulfonate cannot be accurately measured, and achieve the result information Quantitatively comprehensive and efficient evaluation of the effect

Inactive Publication Date: 2019-12-20
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for the determination of monosulfonate and polysulfonate content in petroleum sulfonate samples, so as to solve the problem that existing analytical methods cannot accurately measure monosulfonic acid in petroleum sulfonate samples. Salt and polysulfonate content issues

Method used

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  • Determination method of content of monosulfonate and polysulfonate in petroleum sulfonate sample
  • Determination method of content of monosulfonate and polysulfonate in petroleum sulfonate sample
  • Determination method of content of monosulfonate and polysulfonate in petroleum sulfonate sample

Examples

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Effect test

Embodiment 1

[0040] Such as figure 1 As shown, the separation and purification of monosulfonate and polysulfonate in a petroleum sulfonate sample comprises the following steps in turn:

[0041] (1) Accurately weigh 10 g of petroleum sulfonate sample in 500 mL of distilled water, and stir evenly.

[0042] (2) Transfer the above solution into a 1000mL separatory funnel, add 500mL of the first extractant (n-butanol) for extraction, and the solution is divided into the first upper layer solution and the first lower layer solution.

[0043] (3) Extract the upper layer solution in step (2) with 200mL of the second extractant (distilled water), and the solution is divided into a second upper layer liquid and a second lower layer liquid. The second upper layer solution was collected separately, the second lower layer solution was combined with the first lower layer solution in step (2), and concentrated to about 200 mL.

[0044] (4) Extract the first lower layer solution in step (3) with 200mL o...

Embodiment 2

[0060] Except that the petroleum sulfonate sample to be tested is different, all the other steps are the same as in Example 1. See Table 1 and Table 2 for the separation, purification and detection results of monosulfonate and disulfonate by extraction and chromatography.

Embodiment 3

[0062] Except that the petroleum sulfonate sample to be tested is different, all the other steps are the same as in Example 1. See Table 1 and Table 2 for the separation, purification and detection results of monosulfonate and disulfonate by extraction and chromatography.

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Abstract

The invention provides a determination method of the content of monosulfonates and polysulfonates in a petroleum sulfonate sample. The determination method comprises: separating the monosulfonates andthe polysulfonates in the petroleum sulfonate sample to obtain a first product containing the monosulfonates, a second product containing the monosulfonates and the polysulfonates, and a third product containing the polysulfonates; and respectively detecting the content W1 of the monosulfonates in the first product, the content W2 of the monosulfonates and the polysulfonates in the second products, and the content W3 of the polysulfonates in the third product. Compared with the fact that only the total sulfone content of petroleum sulfonates is analyzed and tested in current industry standards, the amount of object information obtained by using the determination method provided by the invention is more comprehensive, and more references and comparison data are provided for accurately andefficiently evaluating the quality of the petroleum sulfonate sample.

Description

technical field [0001] The invention relates to the field of heavy oil exploitation, in particular to a method for determining the content of monosulfonates and polysulfonates in petroleum sulfonate samples. Background technique [0002] Surfactant molecules are composed of two parts: lipophilic group and oleophobic group. Its unique structural composition causes surfactant molecules to be enriched at the liquid-liquid interface and can reduce the interfacial tension of the solution system. Therefore, it can be obtained in oil field chemical flooding. widely used. Compared with other types of surfactants, petroleum sulfonate has less adsorption on the surface of reservoir rocks and its raw materials are easily available, so it is the most common in chemical flooding applications. The content of petroleum sulfonate active matter is an important symbol to judge whether the product is qualified, and it is also an important factor affecting the price of the product. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06G01N2030/062
Inventor 岳新建聂小斌栾和鑫李织宏陈权生任豪关丹阙庭丽唐文洁焦秋菊帕提古丽·麦麦提向湘兴徐崇军白雷罗强
Owner PETROCHINA CO LTD
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