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Oil-soluble heavy oil viscosity reducer and preparation method thereof

A heavy oil viscosity reducer and oil-soluble technology, applied in the field of oil-soluble heavy oil viscosity reducer and its preparation, can solve the problems of poor universality, insufficient oil solubility, insignificant viscosity reduction effect, etc. The effect of significant viscosity reduction and good universality

Active Publication Date: 2021-04-13
SOUTHWEST PETROLEUM UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on oil-soluble viscosity reducers at present, most of which are limited to laboratory research and field tests, and there are problems of insufficient oil solubility, insignificant viscosity reduction effect, and poor universality.

Method used

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  • Oil-soluble heavy oil viscosity reducer and preparation method thereof
  • Oil-soluble heavy oil viscosity reducer and preparation method thereof
  • Oil-soluble heavy oil viscosity reducer and preparation method thereof

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preparation example Construction

[0026] The present invention also provides a preparation method of an oil-soluble heavy oil viscosity reducer, comprising: mixing 2,2,3,3-tetrafluoropropyl methacrylate, styrene, maleic anhydride and formaldehyde according to the molar ratio Stearyl acrylate is mixed, dissolved and heated to initiate a reaction to obtain an oil-soluble thick oil viscosity reducer.

[0027] Preferably, the molar ratio is: 2,2,3,3-tetrafluoropropyl methacrylate:styrene:maleic anhydride:octadecyl methacrylate=1:3:2:10.

[0028] Preferably, the solvent selected in the dissolution process is toluene, and the mass of the toluene is 90%-110% of the mass sum of the four monomers. Compared with other solvents, this solvent is less toxic and will not affect the progress of the reaction.

[0029] Preferably, the heating temperature in the heating process is 60°C-80°C.

[0030] Preferably, the initiator for initiating the reaction is benzoyl peroxide, and the mass of the benzoyl peroxide is 1%-2% of the...

Embodiment 1

[0036] The molar ratio of the reaction monomers is: 2,2,3,3-tetrafluoropropyl methacrylate: styrene: maleic anhydride: octadecyl methacrylate is 1:2:1:9.

[0037] The preparation process is: add 0.2g of 2,2,3,3-tetrafluoropropyl methacrylate, 0.22g of styrene, 0.1g of The octadecyl methacrylate of maleic anhydride and 3.05g, add the toluene of 1.57g again as solvent, when stirring while heating in oil bath until temperature is 60 ℃, 0.714g benzoyl peroxide is dissolved in 2 g of toluene was added dropwise into a three-necked flask to initiate the reaction. After 5 hours of reaction, the heating was stopped, and the above reaction solution was rotary evaporated under vacuum conditions to remove the solvent toluene to obtain an oil-soluble heavy oil viscosity reducer.

Embodiment 2

[0039] The molar ratio of the reaction monomers is: 2,2,3,3-tetrafluoropropyl methacrylate: styrene: maleic anhydride: octadecyl methacrylate is 1:4:3:11.

[0040] The preparation process is: add 0.2g of 2,2,3,3-tetrafluoropropyl methacrylate, 0.44g of styrene, 0.3g of The octadecyl methacrylate of maleic anhydride and 3.72g, add the toluene of 2.66g again as solvent, when stirring while heating in oil bath until the temperature is 60 ℃, 0.0932g benzoyl peroxide is dissolved in 2 g of toluene was added dropwise into a three-necked flask to initiate the reaction. After 5 hours of reaction, the heating was stopped, and the above reaction solution was rotary evaporated under vacuum conditions to remove the solvent toluene to obtain an oil-soluble heavy oil viscosity reducer.

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Abstract

The invention discloses an oil-soluble heavy oil viscosity reducer and a preparation method thereof. The oil-soluble heavy oil viscosity reducer is obtained by reaction of four monomers of 2,2,3,3-tetrafluoropropyl methacrylate, styrene, maleic anhydride and octadecyl methacrylate, and the molar ratio of the four monomers is 1:(2-4):(1-3):(9-11). The oil-soluble heavy oil viscosity reducer is a novel F-containing viscosity reducer, has a better effect on colloid and asphaltene, has a more remarkable viscosity reduction effect compared with the prior art, is simple in preparation process, mild in condition and good in oil solubility, and can be mixed with methylbenzene for use.

Description

technical field [0001] The invention relates to the field of oilfield chemical additives, in particular to an oil-soluble heavy oil viscosity reducer and a preparation method thereof. Background technique [0002] According to statistics, heavy oil accounts for a relatively large proportion of the entire oil resources, and the discovered reserves of heavy heavy oil in the world are about 1000×10 8 t. China's heavy heavy oil reserves are abundant and widely distributed, with huge reserves in Liaoning, Henan, Shandong and Xinjiang. It is estimated that my country's heavy heavy oil resources are about 300×10 8 t. However, heavy oil has the characteristics of high density, high viscosity, and poor fluidity, and its exploitation and transportation are very difficult. [0003] According to the different characteristics of the heavy oil produced in different regions, different viscosity reduction methods are selected. At present, the commonly used viscosity reduction methods in...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/22C08F212/08C08F222/06C09K8/588
CPCC08F220/1818C09K8/588C08F220/22C08F212/08C08F222/06
Inventor 全红平常世豪余杰李晓明庄志康
Owner SOUTHWEST PETROLEUM UNIV
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