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Pour point depression and viscosity reduction agent and preparation method thereof

A technology of viscosity reducer and auxiliary agent, which is applied in the field of oil-soluble temperature-resistant, salt-resistant, pour point and viscosity reducer and its preparation, can solve the problems of poor temperature-resistant and salt-resistant performance, unsatisfactory application effect, and poor universality. Good pour point depressing, enhanced miscibility and universal applicability, low degree of order effect

Active Publication Date: 2014-03-12
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the current domestic use of crude oil point-point and viscosity-reducing agents in the production of heavy oil, the application effect is not satisfactory, the viscosity-reducing rate is low, the universality is poor, and the resistance to temperature and salt is poor. The pour point and viscosity depressant with good temperature and salt resistance can solve the problem of heavy oil production and lifting

Method used

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  • Pour point depression and viscosity reduction agent and preparation method thereof
  • Pour point depression and viscosity reduction agent and preparation method thereof
  • Pour point depression and viscosity reduction agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066]1) Add 108.0g of stearyl alcohol, 273.6g of toluene, 1.36g of p-toluenesulfonic acid and 0.68g of hydroquinone in a 250ml three-necked flask equipped with a thermometer, reflux condenser, stirrer and water separator, and heat to Dissolve it completely at 60°C, then add 28.8g of acrylic acid, continue to heat up to 110°C, react at constant temperature for 8h, and stop the reaction. After the reaction, the mixed solution obtained is poured into a separatory funnel, neutralized and washed with 5% by mass of NaOH solution, to remove the catalyst and polymerization inhibitor until the water layer is colorless, then repeatedly washed with a large amount of deionized water until Neutral, dried in a vacuum oven at 40°C for 6 hours, the waxy solid finally obtained was octadecyl acrylate.

[0067] 2) Add 97.2g of octadecyl acrylate to a three-necked flask equipped with a condenser, a thermometer and a stirrer, raise the temperature to 60°C, and after it melts, add 11.1g of vinylpy...

Embodiment 2

[0072] 1) In a 250ml three-neck flask equipped with a thermometer, reflux condenser, stirrer and water separator, add 85.6g of tetradecyl alcohol, 273.6g of toluene, 1.36g of p-toluenesulfonic acid and 0.68g of hydroquinone in sequence, and heat to Dissolve it completely at 60°C, then add 34.4g of methacrylic acid, continue to heat up to 110°C, react at constant temperature for 8h, and stop the reaction. After the reaction, the mixed solution obtained is poured into a separatory funnel, neutralized and washed with 5% by mass of NaOH solution, to remove the catalyst and polymerization inhibitor until the water layer is colorless, then repeatedly washed with a large amount of deionized water until Neutral, use a vacuum oven to dry at 40°C for 6 hours, and the finally obtained waxy solid is tetradecyl methacrylate.

[0073] 2) Add 84.6g of tetradecyl methacrylate into a three-necked flask equipped with a condenser, a thermometer and a stirrer, raise the temperature to 60°C, and a...

Embodiment 3

[0078] 1) Add 72.6g of cetyl alcohol, 273.6g of toluene, 1.36g of p-toluenesulfonic acid and 0.68g of hydroquinone in a 250ml three-neck flask equipped with a thermometer, reflux condenser, stirrer and water separator, and heat to Dissolve it completely at 60°C, then add 25.8g of methacrylic acid, continue to heat up to 110°C, react at constant temperature for 8h, and stop the reaction. Pour the mixed solution obtained after the reaction into a separatory funnel, neutralize and wash with a 5% NaOH solution to remove the catalyst and polymerization inhibitor until the water layer is colorless, then repeatedly wash with a large amount of deionized water until Neutral, dried in a vacuum oven at 40°C for 6 hours, the waxy solid finally obtained was hexadecyl methacrylate.

[0079] 2) Add 88.8g cetyl methacrylate to a three-necked flask equipped with a condenser, a thermometer and a stirrer, raise the temperature to 60°C, and after it melts, add 12.8g of vinyl diethylmethylsilane a...

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Abstract

The invention provides a pour point depression and viscosity reduction agent. The pour point depression and viscosity reduction agent is characterized in that the pour point depression and viscosity reduction agent is a copolymer formed by a first monomer and a second monomer, wherein the first monomer is R1-CH=CH-COOR2, R1 is H, alkyls of C1-6 or COOH, R2 is alkyls of C12-24, and the second monomer is an olefinic bond-containing monomer with surface activity.

Description

technical field [0001] The invention relates to a pour point and viscosity reducer used in heavy oil exploitation to reduce the freezing point and viscosity of formation crude oil and improve the fluidity of crude oil, in particular to an oil-soluble heat-resistant, salt-resistant, pour point and viscosity reducer and a preparation method thereof . Background technique [0002] Heavy oil is an important part of the world's oil and gas resources. my country's high-viscosity heavy oil resources are widely distributed. According to incomplete statistics, the proven and controlled reserves have reached 1.6 billion tons, of which land heavy oil accounts for more than 20% of the total oil resources. [0003] With the deepening of oil extraction, the light components of oil produced in oilfields will decrease relatively, and the proportion of heavy components such as waxes, asphaltenes, and colloids in crude oil will increase. This makes the freezing point of crude oil correspond...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F222/14C08F226/10C08F230/08C08F2/30C08F2/26C09K8/588
Inventor 刘德铸张洪君陈小凯王浩曾双红刘建山李瑞柳荣伟何建中马昌明刘强马威石磊
Owner PETROCHINA CO LTD
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