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A kind of polymer heavy oil emulsification viscosity reducer and its preparation method and application

A technology of polymer heavy oil, emulsification and viscosity reduction, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of weak emulsification effect, poor viscosity reduction effect, poor temperature resistance and salt resistance, etc. Achieve the effect of improving the overall emulsification ability, good emulsification and viscosity reduction effect, and high viscosity reduction rate

Active Publication Date: 2021-07-13
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned problems in the prior art, the present invention provides a polymer viscous oil emulsifying agent and its preparation method and application. The viscosifying polymer emulsifying viscosifying agent contains a quaternary ammonium cationic structure, so that the foaming ability Strong, can effectively emulsify heavy oil, and the preparation method is simple and easy to control, with few by-products, effectively solving the problems of poor viscosity reduction effect, poor temperature resistance and salt resistance, and weak emulsification effect

Method used

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  • A kind of polymer heavy oil emulsification viscosity reducer and its preparation method and application
  • A kind of polymer heavy oil emulsification viscosity reducer and its preparation method and application
  • A kind of polymer heavy oil emulsification viscosity reducer and its preparation method and application

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Embodiment 1

[0034] A preparation method of a polymer viscous oil emulsified viscosity reducer, comprising the following steps:

[0035] (1) Dissolve lauryl alcohol in petroleum ether, then add 1wt‰ hydroquinone, under the condition of nitrogen protection, add itaconic acid dropwise, react at 95°C for 4h, and then successively pass through at 80°C, 300r Rotary evaporation under the condition of 1 / min, recrystallization of acetone 3 times, vacuum drying at 40°C for 12 hours to obtain itaconic acid double long-chain ester monomer; the molar ratio of itaconic acid to dodecanol is 1:2.2;

[0036] (2) Under the condition of nitrogen protection, dissolve propane sultone in tetrahydrofuran, then add dropwise in N,N-dimethylallylamine, react at 45°C for 4h, and then successively pass through at 80 ℃, 300r / min rotary evaporation, acetone recrystallization 3 times, vacuum drying at 40 ℃ for 12h to obtain sulfobetaine monomer; N,N-dimethylallylamine and propane sultone The ratio is 1:1;

[0037] (3...

Embodiment 2

[0039] A preparation method of a polymer viscous oil emulsified viscosity reducer, comprising the following steps:

[0040] (1) Dissolve myristyl alcohol in petroleum ether, then add 1wt‰ hydroquinone, add itaconic acid dropwise under the condition of nitrogen protection, react at 95°C for 5h, and then successively heat the mixture at 80°C, 300r Rotary evaporation under the condition of / min, acetone recrystallization 4 times, and vacuum drying at 40°C for 12 hours to obtain itaconic acid double long-chain ester monomer; the molar ratio of itaconic acid to tetradecyl alcohol was 1:2.4;

[0041] (2) Under the condition of nitrogen protection, dissolve propane sultone in tetrahydrofuran, and then add it dropwise in N, N-dimethylallylamine, react at 45°C for 4h, and then successively pass through at 80 ℃, 300r / min rotary evaporation, acetone recrystallization 3 times, vacuum drying at 40 ℃ for 12h to obtain sulfobetaine monomer; N,N-dimethylallylamine and propane sultone The rat...

Embodiment 3

[0044] A preparation method of a polymer viscous oil emulsified viscosity reducer, comprising the following steps:

[0045](1) Dissolve octadecyl alcohol in petroleum ether, then add 2wt‰ hydroquinone, under the condition of nitrogen protection, add itaconic acid dropwise, react at 100°C for 4h, and then successively pass through at 80°C, 300r Rotary evaporation under the condition of 1 / min, recrystallization of acetone 5 times, and vacuum drying at 40°C for 12 hours to obtain itaconic acid double long-chain ester monomer; the molar ratio of itaconic acid to stearyl alcohol was 1:2.5;

[0046] (2) Under the condition of nitrogen protection, dissolve propane sultone in tetrahydrofuran, then dropwise add it in N, N-dimethylallylamine, react at 55°C for 3h, and then successively pass through at 80 ℃, 300r / min rotary evaporation, acetone recrystallization 5 times, vacuum drying at 40 ℃ for 12h to obtain sulfobetaine monomer; N,N-dimethylallylamine and propane sultone The ratio is...

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Abstract

The invention provides a high molecular weight oil emulsification viscosity reducer and its preparation method and application. The high molecular weight oil emulsification viscosity reduction agent comprises the following components: acrylamide, sulfobetaine monomer and itaconic acid double long chain Ester monomer; the molar ratio of acrylamide, sulfobetaine monomer and itaconic acid double long-chain ester monomer is 65-70:30-45:1-5. The polymer heavy oil emulsifying viscosity reducer of the present invention contains a quaternary ammonium cationic structure, so that the foaming ability is strong, and the heavy oil can be effectively emulsified, and the preparation method is simple and easy to control, with few by-products, effectively solving the problem of viscosity reduction. Poor effect, poor temperature and salt resistance, and weak emulsifying effect.

Description

technical field [0001] The invention belongs to the technical field of viscosity reducers and their preparation, and in particular relates to a polymer viscous oil emulsifying viscosity reducer and its preparation method and application. Background technique [0002] Petroleum is an indispensable and important resource in today's era, also known as "black gold". It not only holds the lifeline of the country, but also affects the economic development of the country. Nowadays, oil is closely linked with people's production and life. With the rapid development of the economy, the living standards of the domestic people have been greatly improved, and the demand for oil is increasing day by day. The oil import volume currently ranks second in the world, but the issue of energy security needs to be resolved urgently. [0003] my country is rich in oil and gas resources, and is the fourth largest producer of heavy oil after Canada, the United States, and Venezuela. It has proven ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F226/02C08F222/14C09K8/588C09K8/584
CPCC08F220/56C09K8/584C09K8/588
Inventor 毛金成彭玉坤刘佳伟韩涤非王晨
Owner SOUTHWEST PETROLEUM UNIV
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