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Oil-based viscosity reducer for raw oil conveyed through pipeline

A viscosity reducer and oil-based technology, which is applied in the pipeline system, gas/liquid distribution and storage, mechanical equipment, etc., can solve the problems of no oil-based viscosity reducer, no emulsification viscosity reduction, low water content in crude oil, etc., to achieve Improve low-temperature flow properties, reduce viscosity, and reduce association effects

Active Publication Date: 2010-09-29
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A large amount of heavy oil abounds in my country. Although water-based emulsifiers can be used to emulsify and reduce viscosity during mining, when gathering and transporting, especially for long-distance pipeline transportation, because the crude oil contains very little water (the water content of pipeline transportation crude oil does not exceed 1.5 %), generally do not use emulsified viscosity reduction method to transport, currently there is no suitable oil-based viscosity reducer for industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] (1) Synthesis of higher alcohol acrylate and maleic anhydride, acrylamide:

[0009] Dissolve maleic anhydride and acrylamide in xylene at 70°C, then add higher alcohol acrylate, the carbon number of the alcohol hydrocarbon group ranges from 16 to 22, higher alcohol acrylate, maleic anhydride and acrylamide The mol ratio is 50%: 25%: 25%, add a small amount of benzoyl peroxide at 76 ℃, control reaction temperature is 85 ℃, constantly supplement benzoyl peroxide, consumption is 0.08%, and the reaction times is 7 hours, The product is obtained after the reaction is completed and the temperature is lowered to normal temperature.

[0010] (2) Synthesis of amides:

[0011] Mix oleic acid and diethylenetriamine at a molar ratio of 30%:70%, add 4% catalyst potassium hydroxide, use toluene as a solvent and a water-carrying agent, heat to a reflux temperature of 110°C, and react for 5 hours until anhydrous is removed , and finally distill off the solvent to obtain the amide.

...

Embodiment 2

[0015] (1) Synthesis of higher alcohol acrylate and maleic anhydride, acrylamide:

[0016] Dissolve maleic anhydride and acrylamide in xylene at 70°C, then add higher alcohol acrylate, the carbon number of the alcohol hydrocarbon group ranges from 16 to 22, higher alcohol acrylate, maleic anhydride and acrylamide The mol ratio is 50%: 25%: 25%, adds a small amount of benzoyl peroxide at 80 ℃, and the control reaction temperature is 90 ℃, constantly replenishes benzoyl peroxide, and consumption is 0.1%, and the reaction times is 8 hours. The product is obtained after the reaction is completed and the temperature is lowered to normal temperature.

[0017] (2) Synthesis of amides:

[0018] Mix oleic acid and diethylenetriamine at a molar ratio of 30%:70%, add 4% catalyst potassium hydroxide, use toluene as a solvent and water-carrying agent, heat to reflux temperature of 110°C, and react for 6 hours until anhydrous is removed , and finally distill off the solvent to obtain the ...

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Abstract

The invention relates to high molecular synthesis technology, in particular to an oil-based viscosity reducer for raw oil conveyed through a pipeline, and belongs to the technical field of chemical industry. The oil-based viscosity reducer is mainly used for reducing the viscosity of the raw oil conveyed through a long-distance pipeline and is prepared by the following steps of: synthesizing terpolymer by using higher alcohol acrylate, maleic anhydride and acrylamide in a molar ratio of 20-70 percent to 10-50 percent to 10-50 percent; synthesizing amide by using oleic acid and diethylenetriamine in a molar ratio of 20-80 percent to 20-80 percent; heating and uniformly mixing ethylene vinyl acetate copolymer, terpolymer, amide and another surfactant in a molar ratio of 0-80 percent to 0-80 percent to 5-60 percent to 5-60 percent in a compounding mode; and then cooling the obtained product and crushing the product into grains to obtain the oil-based viscosity reducer product.

Description

technical field [0001] The invention relates to a polymer synthesis technology, in particular to an oil-based viscosity reducer for pipeline transportation of crude oil, which is mainly used for the viscosity reduction of long-distance pipeline transportation of crude oil, and belongs to the technical field of chemical industry. Background technique [0002] A large amount of heavy oil abounds in my country. Although water-based emulsifiers can be used to emulsify and reduce viscosity during mining, when gathering and transporting, especially for long-distance pipeline transportation, because the crude oil contains very little water (the water content of pipeline transportation crude oil does not exceed 1.5 %), generally do not use emulsified viscosity-reducing mode to transport, currently there is no suitable oil-based viscosity-reducing agent for industrial production. Contents of the invention [0003] The purpose of the present invention is to provide a kind of oil-base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/08C08L23/08C08L31/04C08K5/20C08F220/18C08F222/06C08F220/56F17D1/17
Inventor 张惠民曹旦夫孙旭张宁姜和圣杨文新范军忠刘建国贾宝芳王德治成旭霞吴杰曹明殷寿成林森戴翠兰马雨薇祖海燕张淑红黄明斌
Owner CHINA PETROLEUM & CHEM CORP
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