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Crude oil asphaltene dispersing agent as well as preparation method and application thereof

An asphaltene dispersant and dispersant technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of high risk, high toxicity, limited effect, etc., and achieve high safety and low product toxicity. , the construction injection into the simple effect

Pending Publication Date: 2022-05-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, most of the commonly used asphaltene dispersing and plugging removers in oilfields have limited effects or (toluene) are highly toxic, and there is a high risk in high-temperature and high-pressure environments. Therefore, it is urgent to provide an efficient, safe, suitable Crude oil asphaltene dispersant used in high temperature and high pressure environment

Method used

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  • Crude oil asphaltene dispersing agent as well as preparation method and application thereof
  • Crude oil asphaltene dispersing agent as well as preparation method and application thereof
  • Crude oil asphaltene dispersing agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 A kind of crude oil asphaltene dispersant, preparation method and application

[0029] A crude oil asphaltene dispersant, which is composed of a polymer of cyclohexanone, methyl oleate, 1-methylpyrrolidone and maleic anhydride-α-octadecene, and the dosage of the components is shown in Table 1.

[0030] Table 1

[0031]

[0032]

[0033] Described preparation method is:

[0034] (1) the cyclohexanone of formula quantity is mixed with methyl oleate, obtains solvent 1;

[0035] (2) dissolving the polymer (AMAC-1) of maleic anhydride-α-octadecene in the formulation amount into 1-methylpyrrolidone to obtain a novel penetrating agent;

[0036] (3) Mix and stir the solvent 1 in step (1) and the novel penetrant in step (2) to obtain the crude oil asphaltene dispersant.

[0037] The application is as follows: at normal temperature (25° C.), mix asphalt and the above-mentioned crude oil asphaltene dispersant at a mass ratio of 1:5, and detect that its solubi...

Embodiment 2

[0041] Embodiment 2 A kind of crude oil asphaltene dispersant, preparation method and application

[0042] A crude oil asphaltene dispersant, which is composed of a polymer of cyclohexanone, methyl oleate, 1-methylpyrrolidone and maleic anhydride-α-octadecene, and the dosage of the components is shown in Table 2.

[0043] Table 2

[0044]

[0045]

[0046] Described preparation method is:

[0047] (1) the cyclohexanone of formula quantity is mixed with methyl oleate, obtains solvent 1;

[0048] (2) dissolving the polymer (AMAC-1) of maleic anhydride-α-octadecene in the formulation amount into 1-methylpyrrolidone to obtain a novel penetrating agent;

[0049] (3) Mix and stir the solvent 1 in step (1) and the novel penetrant in step (2) to obtain the crude oil asphaltene dispersant.

[0050] The application is as follows: at normal temperature (25° C.), mix asphalt and the above-mentioned crude oil asphaltene dispersant at a mass ratio of 1:5, and detect that its solubi...

Embodiment 3

[0054] Embodiment 3 A kind of crude oil asphaltene dispersant, preparation method and application

[0055] A crude oil asphaltene dispersant, which is composed of a polymer of cyclohexanone, methyl oleate, 1-methylpyrrolidone and maleic anhydride-α-octadecene, and the dosage of the components is shown in Table 3.

[0056] table 3

[0057]

[0058]

[0059] Described preparation method is:

[0060] (1) the cyclohexanone of formula quantity is mixed with methyl oleate, obtains solvent 1;

[0061] (2) dissolving the polymer (AMAC-1) of maleic anhydride-α-octadecene in the formulation amount into 1-methylpyrrolidone to obtain a novel penetrating agent;

[0062] (3) Mix and stir the solvent 1 in step (1) and the novel penetrant in step (2) to obtain the crude oil asphaltene dispersant.

[0063] The application is as follows: at normal temperature (25° C.), mix asphalt and the above-mentioned crude oil asphaltene dispersant at a mass ratio of 1:5, and detect that its solubi...

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Abstract

The invention discloses a crude oil asphaltene dispersing agent and a preparation method and application thereof, and the dispersing agent comprises the following components in parts by weight: 30-75 parts of a main solvent, 20-50 parts of a cosolvent and 1-25 parts of a penetrant. The preparation method comprises the following steps: uniformly mixing the main solvent and the cosolvent, adding the penetrant, and uniformly mixing; or uniformly mixing the cosolvent with the penetrant, adding the main solvent, and uniformly mixing to obtain the water-based cleaning agent. Meanwhile, the invention also provides application of the crude oil asphaltene dispersant in dissolving and dispersing asphaltene precipitates. The dispersant disclosed by the invention has the advantages of good temperature resistance, simple injection mode, good asphaltene precipitate dissolving and dispersing effects and the like, and can be applied to various use environments for dissolving and removing asphaltene precipitates under complex conditions from high temperature and high pressure to normal temperature and normal pressure, including crude oil exploitation, shaft lifting and pipeline transportation processes; the problem of blockage caused by asphaltene deposition can be effectively solved, and the method has a good application prospect.

Description

technical field [0001] The invention relates to a crude oil asphaltene dispersant, in particular to a crude oil asphaltene dispersant for dispersing and removing stratum blockage and deposited asphaltenes in well bores, improving pipeline transportation capacity during crude oil exploitation and transportation, a preparation method and its application. Background technique [0002] During the development of oil and gas fields, formation plugging and wellbore plugging caused by the precipitation and deposition of asphaltene are an important reason for the decline in production capacity, and it is also a serious problem facing the petroleum industry. At present, the commonly used methods for removing asphaltene deposition include reducing shear force and pressure drop, regular scraping pipe removal, solvent treatment, injection of dispersant plugging remover, etc. Among them, the injection of dispersant is known because of its good dispersion effect, construction safety, and e...

Claims

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Application Information

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IPC IPC(8): C09K8/524
CPCC09K8/524Y02A20/204
Inventor 刘磊曹畅任波杨祖国孙同成闫科举程仲富范伟东邢钰杨小辉焦保雷李亮孙桓郭强伍兴东
Owner CHINA PETROLEUM & CHEM CORP
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