Synthesis method of thickened oil sulfonate and synthesis method of thickened oil sulfonate surfactant

A surfactant, oil sulfonate technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of difficult stirring, poor water solubility, low weight gain of synthetic products, etc. Effects of coking or oversulfonation, improving interfacial properties and water solubility

Inactive Publication Date: 2020-06-16
DAQING PETROLEUM ADMINISTRATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention provides a method for synthesizing heavy oil sulfonate, which solves the problem of difficulty in stirring, serious coking, low weight gain of the synthetic product, and water-soluble gender issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Mix fulvene diesel oil with a distillation range of 220-300°C and dehydrated heavy oil at a ratio of 1:2, weigh 50g of the mixture of the two and add it to a 250mL four-necked flask equipped with an electric stirrer, stir at a constant speed, and the four-necked flask Put it into a constant temperature oil bath; after the initial temperature in the bottle reaches 75°C, inject SO at a gas concentration ratio of 3.5% 3 Mix gas with nitrogen and react for 40 minutes.

[0035] There is red smoke at the initial stage of the reaction, and the temperature is not high; the initial reaction temperature rises, the depth of sulfonation of heavy oil gradually increases, and the mid-term temperature drops, and the natural constant temperature reaches 90 ° C. The viscosity of the system increases, but there is no obvious coking. reaction.

[0036] The aging time is 2 hours, the weight gain ratio (weight gain ratio = (weight of product after sulfonation - weight of raw material befor...

Embodiment 2

[0039] Mix fulene diesel oil with a distillation range of 220-300°C and heavy alkylbenzene with a distillation range of 300-400°C in a ratio of 1:1 as the active component of heavy oil sulfonation, and mix it with dehydrated heavy oil in a ratio of 1:3 , weigh 50g into a 250mL four-necked flask equipped with an electric stirrer, stir at a constant speed, put the four-necked flask into a constant temperature oil bath; Mixed gas of SO3 and nitrogen, reacted for 40 minutes.

[0040] In the early stage of the reaction, there was a clear rise-fall phenomenon. When the temperature was naturally constant to 95°C, the viscosity of the system increased, but there was no obvious coking. In the later stage, the temperature dropped and the reaction stopped.

[0041] The aging time is 2 hours, the weight gain ratio is 20%, and the conversion rate of sulfonic acid is increased; 20% lye is added to neutralize at a ratio of 1.4 times the weight gain ratio, and the neutralization temperature i...

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PUM

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Abstract

The invention discloses a synthesis method of thickened oil sulfonate and a synthesis method of a thickened oil sulfonate surfactant. The synthesis method of the thickened oil sulfonate comprises a thickened oil sulfonation step, and is characterized in that olefinic diesel oil or a mixture of the olefinic diesel oil and heavy alkylbenzene is mixed in thickened oil. The synthesis method of the thickened oil sulfonate surfactant is characterized by comprising the following steps: aging thickened oil sulfonate according to claims 1-7, and adding alkali liquor for neutralization; and after the neutralization is finished, adding mixed alcohol, and uniformly mixing to obtain the thickened oil sulfonate surfactant. The problems of difficult stirring, serious coking, low synthetic product weightgain, poor water solubility and the like of the existing thickened oil sulfonate in the heavy oil sulfonation process are solved.

Description

technical field [0001] The invention relates to a synthetic method of petroleum sulfonate surfactant. Background technique [0002] Currently, petroleum sulfonate, petroleum carboxylate, lignin sulfonate, alkylbenzene sulfonate and other composite flooding surfactants have been studied in the oil field. In view of raw material source, production process and product performance, alkylbenzene Sulfonate and petroleum sulfonate-based surfactant series products have successfully promoted the industrial application of ASP flooding. [0003] The aromatics content in heavy oil is more than 30%, which has the characteristics of producing sulfonate surfactants, and is rich in sources and low in price. It is suitable for the production of surfactants for heavy oil sulfonate flooding. However, there are no relevant reports on the specific application of heavy oil sulfonate to surfactants for oil displacement at home and abroad. [0004] The methods for synthesizing heavy oil sulfonate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584
CPCC09K8/584
Inventor 邓从刚杨希志王玉伟于克利赵清民
Owner DAQING PETROLEUM ADMINISTRATION
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