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Oil-based viscosity reducer for pipelining crude oil

A viscosity reducer and oil-based technology, which is applied in the field of oil-based viscosity reducer, long-distance pipeline transportation crude oil viscosity reduction, and polymer synthesis, can solve the problem of viscosity reduction without emulsification, low water content in crude oil, and no oil-based viscosity reduction Solve problems such as additives, achieve the effects of reducing viscosity, reducing association, and improving low temperature flow properties

Active Publication Date: 2010-10-13
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

[0009] (1) Synthesis of higher alcohol acrylate and maleic anhydride, vinyl acetate terpolymer:

[0010] Dissolve maleic anhydride and vinyl acetate 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 acetic acid The mol ratio of vinyl ester is 50%: 25%: 25%, adds a small amount of benzoyl peroxide at temperature 76 ℃, and the control reaction temperature is 85 ℃, constantly replenishes benzoyl peroxide, consumption is 0.08%, and the reaction time is 7 hours. The product is obtained after the reaction is completed and the temperature is lowered to normal temperature.

[0011] (2) Synthesis of amides:

[0012] Mix stearic acid and monoethanolamine 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. Fin...

Embodiment 2

[0016] (1) Synthesis of higher alcohol acrylate and maleic anhydride, vinyl acetate terpolymer:

[0017] Dissolve maleic anhydride and vinyl acetate 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 acetic acid The mol ratio of vinyl ester is 50%: 25%: 25%, adds a small amount of benzoyl peroxide at 80 ℃ of temperature, and control reaction temperature is 90 ℃, constantly replenishes benzoyl peroxide, consumption is 0.1%, and the reaction time is 8 hours. The product is obtained after the reaction is completed and the temperature is lowered to normal temperature.

[0018] (2) Synthesis of amides:

[0019] Mix stearic acid and ethanolamine 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 6 hours until anhydrous is removed. Finally, th...

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PUM

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Abstract

The invention relates to the technology of polymer synthesis, in particular to an oil-based viscosity reducer for pipelining crude oil, which is mainly used for viscosity reduction for pipelining the crude oil in long distance and belongs to the technical field of chemical industries. The oil-based viscosity reducer is prepared by the following steps of: synthesizing a terpolymer by using higher alcohol acrylate, maleic anhydride and vinyl acetate, wherein the mole ratio of the higher alcohol acrylate to the maleic anhydride to the vinyl acetate is 20-70 percent:10-50 percent:10-50 percent; synthesizing amide from a stearic acid and monoethanolamine, wherein the mole ratio of the stearic acid to the monoethanolamine is 20-80 percent:20-80 percent; and heating and uniformly mixing the ethylenevinyl acetate copolymer, the terpolymer, the amide and other surface activating agents in the mole ratio of 0-80 percent:0-80 percent:5-60 percent: 5-60 percent in a compounding mode, and then cooling a mixture and smashing the mixture into grains to obtain the product of the oil-based viscosity reducer.

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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IPC IPC(8): F17D1/17
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苏航戴翠兰马雨薇祖海燕张淑红黄明斌
Owner CHINA PETROLEUM & CHEM CORP