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Asphaltene inhibitor and preparation method thereof

A technology of asphaltene inhibitor and organic solvent, applied in the field of asphaltene inhibitor and its preparation, can solve problems such as poor effect, and achieve the effect of good inhibitory effect, wide source and less dosage

Active Publication Date: 2021-06-04
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem that the existing asphaltene inhibitors are not effective, and provides an asphaltene inhibitor, which is obtained by copolymerizing p-hydroxystyrene, p-styrenesulfonic acid and stearyl acrylate in an organic solvent, which is comparable to Compared with the existing asphaltene inhibitors, it has the advantages of low cost and excellent inhibitory effect

Method used

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  • Asphaltene inhibitor and preparation method thereof
  • Asphaltene inhibitor and preparation method thereof
  • Asphaltene inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This embodiment prepares a kind of asphaltene inhibitor, and its specific preparation method is:

[0022] 1. Dissolving hydroxystyrene, p-styrenesulfonic acid and octadecyl acrylate in an organic solvent to form a solution, adding an initiator, benzoyl peroxide, and reacting to obtain a copolymer asphaltene inhibitor.

[0023] 2. a kind of asphaltene inhibitor as claimed in claim 1 is characterized in that: the mol ratio of hydroxystyrene, p-styrene sulfonic acid, stearyl acrylate is 3:1:2.

[0024] 3. A kind of asphaltene inhibitor as claimed in claim 2, its organic solvent is: at least one of xylene, toluene, sherwood oil etc.;

[0025] Further, in the above 1, the monomer mass concentration of the solution system is: 18%;

[0026] Further, in the above 1, the nitrogen deoxygenation time is: 40min;

[0027] Further, in the above 1, the amount of the initiator relative to the mass fraction of the monomer is: 0.3% to 0.9%;

[0028] Further, in the above 1, the copoly...

Embodiment 2

[0030] This embodiment prepares a kind of asphaltene inhibitor, and its specific preparation method is:

[0031] 1. Dissolving hydroxystyrene, p-styrenesulfonic acid and octadecyl acrylate in an organic solvent to form a solution, adding an initiator, benzoyl peroxide, and reacting to obtain a copolymer asphaltene inhibitor.

[0032] 2. a kind of asphaltene inhibitor as claimed in claim 1 is characterized in that: the mol ratio of hydroxystyrene, p-styrene sulfonic acid, stearyl acrylate is 4:1:1.

[0033] 3. A kind of asphaltene inhibitor as claimed in claim 2, its organic solvent is: at least one of xylene, toluene, sherwood oil etc.;

[0034] Further, in the above 1, the monomer mass concentration of the solution system is: 18%;

[0035] Further, in the above 1, the nitrogen deoxygenation time is: 40min;

[0036] Further, in the above 1, the amount of the initiator relative to the mass fraction of the monomer is: 0.3% to 0.9%;

[0037] Further, in the above 1, the copoly...

Embodiment 3

[0039] This embodiment prepares a kind of asphaltene inhibitor, and its specific preparation method is:

[0040] 1. Dissolving hydroxystyrene, p-styrenesulfonic acid and octadecyl acrylate in an organic solvent to form a solution, adding an initiator, benzoyl peroxide, and reacting to obtain a copolymer asphaltene inhibitor.

[0041] 2. a kind of asphaltene inhibitor as claimed in claim 1, is characterized in that: the mol ratio of hydroxystyrene, p-styrene sulfonic acid, stearyl acrylate is 3:1:4

[0042] 3. A kind of asphaltene inhibitor as claimed in claim 2, its organic solvent is: at least one of xylene, toluene, sherwood oil etc.;

[0043] Further, in the above 1, the monomer mass concentration of the solution system is: 18%;

[0044] Further, in the above 1, the nitrogen deoxygenation time is: 40min;

[0045] Further, in the above 1, the amount of the initiator relative to the mass fraction of the monomer is: 0.3% to 0.9%;

[0046] Further, in the above 1, the copoly...

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Abstract

The invention discloses an asphaltene inhibitor and a preparation method thereof, and the preparation method comprises the following steps: dissolving p-hydroxystyrene, p-styrenesulfonic acid and octadecyl acrylate in an organic solvent, adding an initiator benzoyl peroxide, and reacting at 65-80 DEG C for 4-7 hours to obtain the asphaltene inhibitor. The asphaltene inhibitor is simple to prepare, has a good asphaltene inhibition effect, and can be widely applied to thickened oil recovery, gathering and transportation.

Description

technical field [0001] The invention relates to an asphaltene inhibitor and a preparation method thereof, belonging to the field of oil field chemicals. Background technique [0002] Asphaltene is a black, brittle, shiny solid with a mass density between 1.13g / cm3 and 1.20g / cm3, which is insoluble in small molecular weight alkanes, but soluble in aromatic hydrocarbon solvents (such as toluene and benzene) components. After testing, the solubility parameters of asphalt at 25°C are between 19 and 24MPa 0.5 Between them, it is higher than the solubility parameters of other components in crude oil, so asphaltene precipitation often occurs in the process of oil exploitation, gathering and transportation, which brings damage to the reservoir and also brings difficulties to ground gathering and transportation. [0003] Chemical remediation of bitumen deposits during oil extraction is a costly and productive process. Effective inhibitors help prevent bitumen from flocculating and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/14C08F220/18C09K8/524
CPCC08F212/24C08F220/1818C09K8/524C08F212/30
Inventor 郑存川闫朝宗张太亮段文猛黄志宇
Owner SOUTHWEST PETROLEUM UNIV